Noritaka Suzuki, Yawara Eguchi, Takashi Hirai, Takuya Takahashi, Yohei Takahashi, Kota Watanabe, Tomohiro Banno, Kyohei Sakaki, Satoshi Maki, Yuuichi Takano, Yuki Taniguchi, Yasuchika Aoki, Takamitsu Konishi, Yutaka Hiraizumi, Masatsune Yamagata, Akihiro Hirakawa, Seiji Ohtori. Outcome of intradiscal condoliase injection therapy for patients with recurrent lumbar disc herniation. Asian Spine J. 2024.08; 18 (4): 550-559. ( PubMed, DOI )

Ryosuke Hirota, Tsutomu Oshigiri, Noriyuki Iesato, Makoto Emori, Atsushi Teramoto, Yuki Shiratani, Akinobu Suzuki, Hidetomi Terai, Takaki Shimizu, Kenichiro Kakutani, Yutaro Kanda, Hiroyuki Tominaga, Ichiro Kawamura, Masayuki Ishihara, Masaaki Paku, Yohei Takahashi, Toru Funayama, Kousei Miura, Eiki Shirasawa, Hirokazu Inoue, Atsushi Kimura, Takuya Iimura, Hiroshi Moridaira, Hideaki Nakajima, Shuji Watanabe, Koji Akeda, Norihiko Takegami, Kazuo Nakanishi, Hirokatsu Sawada, Koji Matsumoto, Masahiro Funaba, Hidenori Suzuki, Haruki Funao, Takashi Hirai, Bungo Otsuki, Kazu Kobayakawa, Koji Uotani, Hiroaki Manabe, Shinji Tanishima, Ko Hashimoto, Chizuo Iwai, Daisuke Yamabe, Akihiko Hiyama, Shoji Seki, Yuta Goto, Masashi Miyazaki, Kazuyuki Watanabe, Toshio Nakamae, Takashi Kaito, Hiroaki Nakashima, Narihito Nagoshi, Satoshi Kato, Shiro Imagama, Kota Watanabe, Gen Inoue, Takeo Furuya. Impact of surgical treatment on patient reported outcome in patients with spinal metastases from prostate cancer. J Orthop Sci. 2024.08; S0949-2658 (24): 00152-0. ( PubMed, DOI )

Motonori Hashimoto, Satoru Egawa, Takashi Hirai, Jun Hashimoto, Shingo Morishita, Kentaro Yamada, Yu Matsukura, Ryosuke Kaho, Hiroto Hada, Jun Oyama, Toshitaka Yoshii. Detection of Dural Defect Localization Using 4-Dimensional Dynamic Computed Tomography Myelography for Patients with Superficial Siderosis. World Neurosurg. 2024.07; 187 e798-e806. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Kentaro Yamada, Yu Matsukura, Satoru Egawa, Jun Hashimoto, Takuya Takahashi, Takahisa Ogawa, Kiyohide Fushimi. Perioperative complications and cost of posterior decompression with fusion in thoracic spine for ossification of the posterior longitudinal ligament and ossification of the ligamentum flavum -a comparative study using a national inpatient database. BMC Musculoskelet Disord. 2024.07; 25 (1): 513. ( PubMed, DOI )

Kentaro Yamada, Toshitaka Yoshii, Mikayo Toba, Satoru Egawa, Shingo Morishita, Yu Matsukura, Takashi Hirai, Atsushi Kudo, Kiyohide Fushimi. Trends in the surgical treatment for metastatic spinal tumor in Japanese administrative data between 2012 and 2020. Int J Clin Oncol. 2024.07; 29 (7): 911-920. ( PubMed, DOI )

Motonori Hashimoto, Takashi Hirai, Kenichiro Sakai, Kentaro Yamada, Kentaro Sakaeda, Jun Hashimoto, Satoru Egawa, Shingo Morishita, Yu Matsukura, Hiroyuki Inose, Yutaka Kobayashi, Hiroaki Onuma, Kyohei Sakaki, Masaki Tomori, Ichiro Torigoe, Miharu Ochi, Hiroki Ishiguro, Satoshi Tamura, Shuta Ushio, Tsuyoshi Yamada, Norihiko Miyake, Kazuo Kusano, Kazuyuki Otani, Shigeo Shindo, Yoshiyasu Arai, Atsushi Okawa, Toshitaka Yoshii. Comparison of Postoperative Complications and Outcomes in Anterior Cervical Spine Surgery: Ossification of the Posterior Longitudinal Ligament Versus Cervical Spondylotic Myelopathy. Clin Spine Surg. 2024.05; 37 (4): 170-177. ( PubMed, DOI )

Zili Zeng, Jun Qin, Liang Guo, Takashi Hirai, Zhiheng Gui, Tao Liu, Chen Su, Daiyang Yu, Mengmeng Yan. Prediction and Mechanisms of Spontaneous Resorption in Lumbar Disc Herniation: Narrative Review. Spine Surg Relat Res. 2024.05; 8 (3): 235-242. ( PubMed, DOI )

Kentaro Yamada, Toshitaka Yoshii, Takashi Hirai, Atsushi Kudo, Nobuyuki Nosaka, Satoru Egawa, Yu Matsukura, Hiroyuki Inose, Atsushi Okawa. Action protocol of medical staff for airway obstruction after anterior cervical spine surgery: A systematic review of case reports. J Orthop Sci. 2024.04; S0949-2658 (24): 00056-3. ( PubMed, DOI )

Masahiko Sumitani, Atsushi Kimura, Takao Mochizuki, Toru Akiyama, Baasanjav Uranbileg, Takuya Takahashi, Takashi Hirai, Kentaro Hayakawa, Hirotaka Chikuda, Makoto Kurano. Cerebrospinal Fluid Lysophosphatidylcholine Species for Distinguishing Narrowing of the Lumbar Spine. World Neurosurg. 2024.03; 183 e571-e575. ( PubMed, DOI )

Takuya Takahashi, Hiroyuki Inose, Takashi Hirai, Yu Matsukura, Shingo Morishita, Satoru Egawa, Jun Hashimoto, Kunihiko Takahashi, Toshitaka Yoshii. Factors associated with the time required for CRP normalization in pyogenic spondylitis: A retrospective observational study. N Am Spine Soc J. 2024.03; 17 100301. ( PubMed, DOI )

Kota Aritaki, Kazuharu Nakagawa, Kanako Yoshimi, Akira Yoshizawa, Shohei Hasegawa, Ryosuke Yanagida, Motonori Hashimoto, Takashi Hirai, Kohei Yamaguchi, Ayako Nakane, Toshitaka Yoshii, Atsushi Okawa, Haruka Tohara. Kinematic analysis of chewing and swallowing function after cervical spine surgery. Eur Spine J. 2024.01; 33 (1): 243-252. ( PubMed, DOI )

Takashi Hirai, Satoru Egawa, Kenichiro Sakai, Hiroaki Onuma, Jun Hashimoto, Kurando Utagawa, Shingo Morishita, Kentaro Yamada, Yu Matsukura, Yoshiyasu Arai, Toshitaka Yoshii. Novel Technique of Anterior Foraminotomy Based on Augmented Reality with Computed Tomography Navigation System: A Case Report. Spine Surg Relat Res. 2024.01; 8 (1): 114-117. ( PubMed, DOI )

Hiroyuki Inose, Takuya Takahashi, Yu Matsukura, Jun Hashimoto, Kurando Utagawa, Satoru Egawa, Kentaro Yamada, Takashi Hirai, Toshitaka Yoshii. Factors Associated With Nonunion After Cervical Fusion Surgery. Cureus. 2023.12; 15 (12): e50866. ( PubMed, DOI )

Sadayuki Ito, Hiroaki Nakashima, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shinji Tsutui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Masahiro Oda, Kensaku Mori, Hiroshi Taneichi, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa, Shiro Imagama. Deep learning-based prediction model for postoperative complications of cervical posterior longitudinal ligament ossification. Eur Spine J. 2023.11; 32 (11): 3797-3806. ( PubMed, DOI )

Kentaro Yamada, Toshitaka Yoshii, Mikayo Toba, Atsushi Kudo, Satoru Egawa, Yu Matsukura, Takashi Hirai, Hiroyuki Inose, Kiyohide Fushimi, Atsushi Okawa. Risk Factors for Postoperative Unfavorable Ambulatory Status After Spinal Surgery for Metastatic Spinal Tumor. Spine (Phila Pa 1976). 2023.10; 48 (20): 1419-1426. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Masato Yuasa, Yu Matsukura, Takahisa Ogawa, Kiyohide Fushimi, Junya Katayanagi, Tetsuya Jinno, Atsushi Okawa, Takeo Fujiwara. Perioperative Complications of Laminoplasty in Degenerative Cervical Myelopathy -A Comparative Study Between Ossification of Posterior Longitudinal Ligament and Cervical Spondylotic Myelopathy Using a Nationwide Inpatient Database. Global Spine J. 2023.09; 13 (7): 1956-1963. ( PubMed, DOI )

Yu Matsukura, Satoru Egawa, Hiroyuki Inose, Kenichiro Sakai, Kazuo Kusano, Shunji Tsutsui, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Hiroshi Moridaira, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Taneichi, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa, Toshitaka Yoshii. Preoperative Symptom Duration Influences Neurological Recovery and Patient-Reported Outcome Measures After Surgical Treatment of Cervical Ossification of the Posterior Longitudinal Ligament. Spine (Phila Pa 1976). 2023.09; 48 (18): 1259-1265. ( PubMed, DOI )

Hiroyuki Inose, Takuya Takahashi, Yu Matsukura, Jun Hashimoto, Kurando Utagawa, Satoru Egawa, Kentaro Yamada, Takashi Hirai, Kunihiko Takahashi, Toshitaka Yoshii. Effect of vitamin D deficiency on surgical outcomes of degenerative cervical myelopathy. N Am Spine Soc J. 2023.09; 15 100239. ( PubMed, DOI )

Leyang Li, Su Chen, Hiroyuki Yokoyama, Hidetoshi Kaburagi, Takashi Hirai, Kunikazu Tsuji, Mitsuhiro Enomoto, Yoshiaki Wakabayashi, Atsushi Okawa. Remodeling of Neuromuscular Junctions in Target Muscle Following Nerve Regeneration in Mice After Delayed Peripheral Nerve Repair. Neuroscience. 2023.08; 524 197-208. ( PubMed, DOI )

Hiroaki Nakashima, Shiro Imagama, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shinji Tsutsui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Hiroshi Moridaira, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Taneichi, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Atsushi Okawa, Masashi Yamazaki. Factors Associated With Loss of Cervical Lordosis After Laminoplasty for Patients With Cervical Ossification of the Posterior Longitudinal Ligament: Data From a Prospective Multicenter Study. Spine (Phila Pa 1976). 2023.08; 48 (15): 1047-1056. ( PubMed, DOI )

Atsuyuki Kawabata, Kenichiro Sakai, Kentaro Yamada, Kurando Utagawa, Jun Hashimoto, Shingo Morishita, Yu Matsukura, Takuya Oyaizu, Takashi Hirai, Hiroyuki Inose, Masaki Tomori, Ichiro Torigoe, Hiroaki Onuma, Kazuo Kusano, Kazuyuki Otani, Yoshiyasu Arai, Shigeo Shindo, Atsushi Okawa, Toshitaka Yoshii. The lower Osteotomy Level is Associated With Decreased Revision Surgery Due to Mechanical Complications After Three-Column Osteotomy in Patients With Adult Spinal Deformity: A Multi-Institutional Retrospective Study. Global Spine J. 2023.08; 21925682231196449. ( PubMed, DOI )

Masayuki Miyagi, Gen Inoue, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Atsushi Kimura, Takeo Furuya, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Hiroaki Nakashima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Masao Koda, Hiroshi Takahashi, Shinsuke Ikeda, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Takaso, Atsushi Okawa, Masashi Yamazaki. Residual Neuropathic Pain in Postoperative Patients With Cervical Ossification of Posterior Longitudinal Ligament. Clin Spine Surg. 2023.07; 36 (6): E277-E282. ( PubMed, DOI )

Narihito Nagoshi, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shunji Tsutsui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Yasunori Sato, Satoshi Maki, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Hiroshi Moridaira, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Kota Watanabe, Hiroshi Taneichi, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Masashi Yamazaki. Comparison of Surgical Outcomes of Anterior and Posterior Fusion Surgeries for K-line (-) Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Multicenter Study. Spine (Phila Pa 1976). 2023.07; 48 (13): 937-943. ( PubMed, DOI )

Takumi Kaku, Yoto Oh, Shingo Sato, Hirotaka Koyanagi, Yuki Funauchi, Takashi Hirai, Masato Yuasa, Yu Matsukura, Toshitaka Yoshii, Tsuyoshi Nakagawa, Satoshi Miyake, Atsushi Okawa. Prevalence of Precursory Signs of Atypical Femoral Fractures in Patients Receiving Bone-Modifying Agents for Bone Metastases: A Cross-Sectional Study. JBMR Plus. 2023.07; 7 (7): e10749. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Yu Matsukura, Takashi Hirai, Toshitaka Yoshii, Shigenori Kawabata, Kunihiko Takahashi, Atsushi Okawa. Factors influencing the long-term outcomes of instrumentation surgery for degenerative lumbar spondylolisthesis: a post-hoc analysis of a prospective randomized study. Spine J. 2023.06; 23 (6): 799-804. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Yoshiyasu Arai, Takashi Hirai, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Kyohei Sakaki, Masato Yuasa, Tsuyoshi Yamada, Yu Matsukura, Takuya Oyaizu, Shingo Morishita, Atsushi Okawa. K-Line Tilt is a Predictor of Postoperative Kyphotic Deformity After Laminoplasty for Cervical Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament. Global Spine J. 2023.05; 13 (4): 1005-1010. ( PubMed, DOI )

Takuya Takahashi, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Yu Matsukura, Shingo Morishita, Yutaka Kobayashi, Kurando Utagawa, Atsuyuki Kawabata, Jun Hashimoto, Tomoyuki Tanaka, Takayuki Motoyoshi, Motonori Hashimoto, Shigenori Kawabata, Atsushi Okawa. Risk factors for recurrence and regrowth of spinal schwannoma. J Orthop Sci. 2023.05; 28 (3): 554-559. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Yu Matsukura, Yuki Funauchi, Satoru Egawa, Kurando Utagawa, Jun Hashimoto, Mariko Nishizawa, Kohei Yamamoto, Atsushi Okawa. Intraosseous Aggressive Schwannoma in the Lumbar Spine: A Case Report. Spine Surg Relat Res. 2023.05; 7 (3): 288-292. ( PubMed, DOI )

Akira Yoshizawa, Kazuharu Nakagawa, Kanako Yoshimi, Motonori Hashimoto, Kota Aritaki, Miki Ishii, Kohei Yamaguchi, Ayako Nakane, Atsuyuki Kawabata, Takashi Hirai, Toshitaka Yoshii, Masaomi Ikeda, Atsushi Okawa, Haruka Tohara. Analysis of swallowing function after anterior/posterior surgery for cervical degenerative disorders and factors related to the occurrence of postoperative dysphagia. Spine J. 2023.04; 23 (4): 513-522. ( PubMed, DOI )

Hiroaki Onuma, Kenichiro Sakai, Yoshiyasu Arai, Ichiro Torigoe, Masaki Tomori, Kyohei Sakaki, Takashi Hirai, Satoru Egawa, Yutaka Kobayashi, Atsushi Okawa, Toshitaka Yoshii. Augmented Reality Support for Anterior Decompression and Fusion Using Floating Method for Cervical Ossification of the Posterior Longitudinal Ligament. J Clin Med. 2023.04; 12 (8): 2898. ( PubMed, DOI )

Shuta Ushio, Toshitaka Yoshii, Kazuyuki Otani, Shigeo Shindo, Kouichi Mizuno, Kazuo Kusano, Tsuyoshi Yamada, Hiroyuki Inose, Takashi Hirai, Masato Yuasa, Atsuyuki Kawabata, Osamu Nakai, Atsushi Okawa. Pelvic incidence is a risk factor for lower instrumented vertebra failure in adult spinal deformity patients who underwent corrective fusion terminating at the L5 vertebra. J Orthop Sci. 2023.03; 28 (2): 302-307. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shoichi Ichimura, Hiroaki Nakamura, Masatoshi Hoshino, Shinji Takahashi, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Takashi Hirai, Toshitaka Yoshii, Kunihiko Takahashi, Atsushi Okawa. Factors affecting the quality of life in the chronic phase of thoracolumbar osteoporotic vertebral fracture managed conservatively with a brace. Spine J. 2023.03; 23 (3): 425-432. ( PubMed, DOI )

Takuya Takahashi, Toshitaka Yoshii, Kanji Mori, Shigeto Kobayashi, Hisashi Inoue, Kurisu Tada, Naoto Tamura, Takashi Hirai, Nobuhiro Sugimura, Narihito Nagoshi, Satoshi Maki, Keiichi Katsumi, Masao Koda, Kazuma Murata, Kazuhiro Takeuchi, Hiroaki Nakashima, Shiro Imagama, Yoshiharu Kawaguchi, Masashi Yamazaki, Atsushi Okawa. Comparison of radiological characteristics between diffuse idiopathic skeletal hyperostosis and ankylosing spondylitis: a multicenter study. Sci Rep. 2023.02; 13 (1): 1849. ( PubMed, DOI )

Takahisa Ogawa, Kazuyuki Fukushima, Miyuki Niimi, Haggai Schermann, Takayuki Motoyoshi, Janelle Moross, Motonori Hashimoto, Takashi Hirai, Takeo Fujiwara, Atsushi Okawa, Yoshiro Kurosa, Toshitaka Yoshii. A Comparison of Spinopelvic Alignment and Quality of Life between Farmers and Non-Farmers: A Cross-Sectional Population-Based Study in a Japanese Rural Area. J Clin Med. 2023.02; 12 (4): 1393. ( PubMed, DOI )

Makoto Kurano, Masahiko Sumitani, Yoshiyuki Akiyama, Masaki Yamada, Daiki Fujimura, Satoshi Yamaki, Kuniyuki Kano, Junken Aoki, Kentaro Hayakawa, Takuya Takahashi, Takashi Hirai, Atsushi Okawa, Haruki Kume, Toru Ogata, Sakae Tanaka, Hirotaka Chikuda, Yutaka Yatomi. Usefulness of lysophosphatidylcholine measurement in the cerebrospinal fluid for differential diagnosis of neuropathic pain: Possible introduction into clinical laboratory testing. Clin Chim Acta. 2023.02; 541 117249. ( PubMed, DOI )

Kyohei Sakaki, Kenichiro Sakai, Yoshiyasu Arai, Ichiro Torigoe, Masaki Tomori, Takashi Hirai, Hiroaki Onuma, Yutaka Kobayashi, Atsushi Okawa, Toshitaka Yoshii. Prospective Comparative Study of Dysphagia after Subaxial Cervical Spine Surgery: Cervical Spondylotic Myelopathy and Posterior Longitudinal Ligament Ossification. J Clin Med. 2023.02; 12 (5): 1774. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Yoshiyasu Arai, Takashi Hirai, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Kyohei Sakaki, Masato Yuasa, Tsuyoshi Yamada, Yu Matsukura, Takuya Oyaizu, Shingo Morishita, Atsushi Okawa. A comparative study of surgical outcomes between anterior cervical discectomy with fusion and selective laminoplasty for cervical spondylotic myelopathy. J Orthop Sci. 2022.11; 27 (6): 1228-1233. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Yoshiyasu Arai, Takashi Hirai, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Kyohei Sakaki, Yu Matsukura, Atsushi Okawa. Impact of preoperative cervical sagittal alignment for cervical myelopathy caused by ossification of the posterior longitudinal ligament on surgical treatment. J Orthop Sci. 2022.11; 27 (6): 1208-1214. ( PubMed, DOI )

Toshitaka Yoshii, Shingo Morishita, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shunji Tsutsui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Taneichi, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Prospective Investigation of Surgical Outcomes after Anterior Decompression with Fusion and Laminoplasty for the Cervical Ossification of the Posterior Longitudinal Ligament: A Propensity Score Matching Analysis. J Clin Med. 2022.11; 11 (23): 7012. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Yoshiyasu Arai, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Takashi Hirai, Kyohei Sakaki, Yu Matsukura, Atsushi Okawa. Early Experiences of One-Level Total Disc Replacement (Prestige LP) in Japan: A Comparison of Short-Term Outcomes with Anterior Cervical Discectomy with Fusion. Spine Surg Relat Res. 2022.11; 6 (6): 581-588. ( PubMed, DOI )

Narihito Nagoshi, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shunji Tsutsui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Kota Watanabe, Hiroshi Taneichi, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Clinical Indicators of Surgical Outcomes After Laminoplasty for Patients With Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Multicenter Study. Spine (Phila Pa 1976). 2022.08; 47 (15): 1077-1083. ( PubMed, DOI )

Kanji Mori, Toshitaka Yoshii, Takashi Hirai, Satoshi Maki, Keiichi Katsumi, Narihito Nagoshi, Soraya Nishimura, Kazuhiro Takeuchi, Shuta Ushio, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Kenyu Ito, Shiro Imagama, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Masahiko Watanabe, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Atsushi Okawa, Yoshiharu Kawaguchi. The characteristics of the young patients with cervical ossification of the posterior longitudinal ligament of the spine: A multicenter cross-sectional study. J Orthop Sci. 2022.07; 27 (4): 760-766. ( PubMed, DOI )

Toshitaka Yoshii, Takashi Hirai, Satoru Egawa, Motonori Hashimoto, Yu Matsukura, Hiroyuki Inose, Nobuo Sanjo, Takanori Yokota, Atsushi Okawa. Case Report: Dural Dissection With Ventral Spinal Fluid-Filled Collection in Superficial Siderosis: Insights Into the Pathology From Anterior-Approached Surgical Cases. Front Neurol. 2022.07; 13 919280. ( PubMed, DOI )

Takahisa Ogawa, Toshitaka Yoshii, Jun Oyama, Nobuhiro Sugimura, Takashi Akada, Takaaki Sugino, Motonori Hashimoto, Shingo Morishita, Takuya Takahashi, Takayuki Motoyoshi, Takuya Oyaizu, Tsuyoshi Yamada, Hiroaki Onuma, Takashi Hirai, Hiroyuki Inose, Yoshikazu Nakajima, Atsushi Okawa. Detecting ossification of the posterior longitudinal ligament on plain radiographs using a deep convolutional neural network: a pilot study. Spine J. 2022.06; 22 (6): 934-940. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Yu Matsukura, Takahisa Ogawa, Kiyohide Fushimi, Junya Katayanagi, Tetsuya Jinno, Atsushi Okawa. Perioperative Complications of Anterior Decompression with Fusion in Degenerative Cervical Myelopathy-A Comparative Study between Ossification of Posterior Longitudinal Ligament and Cervical Spondylotic Myelopathy Using a Nationwide Inpatient Database. J Clin Med. 2022.06; 11 (12): 3398. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Jun Hashimoto, Shuta Ushio, Kanji Mori, Satoshi Maki, Keiichi Katsumi, Narihito Nagoshi, Kazuhiro Takeuchi, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Soraya Nishimura, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Hiroaki Nakashima, Shiro Imagama, Kazuma Murata, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Masahiko Watanabe, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Morio Matsumoto, Masaya Nakamura, Satoru Egawa, Yu Matsukura, Hiroyuki Inose, Atsushi Okawa, Masashi Yamazaki, Yoshiharu Kawaguchi. Clinical Characteristics of Patients with Ossification of the Posterior Longitudinal Ligament and a High OP Index: A Multicenter Cross-Sectional Study (JOSL Study). J Clin Med. 2022.06; 11 (13): 3694. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Masato Yuasa, Yu Matsukura, Takahisa Ogawa, Kiyohide Fushimi, Atsushi Okawa, Takeo Fujiwara. Comparison of perioperative complications in anterior decompression with fusion and posterior decompression with fusion for thoracic ossification of the posterior longitudinal ligament -a retrospective cohort study using a nationwide inpatient database. J Orthop Sci. 2022.05; 27 (3): 600-605. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Masanao Sasaki, Yu Matsukura, Takashi Hirai, Toshitaka Yoshii, Shigenori Kawabata, Akihiro Hirakawa, Atsushi Okawa. Comparison of decompression, decompression plus fusion, and decompression plus stabilization: a long-term follow-up of a prospective, randomized study. Spine J. 2022.05; 22 (5): 747-755. ( PubMed, DOI )

Ryo Iwase, Tadashi Kanouchi, Toshitaka Yoshii, Taro Ishiguro, Takashi Hirai, Atsushi Okawa, Takanori Yokota, Nobuo Sanjo. Diverging pathophysiology in superficial siderosis with proximal upper limb amyotrophy. J Neurol Sci. 2022.05; 436 120248. ( PubMed, DOI )

Hidetoshi Kaburagi, Tetsuya Nagata, Mitsuhiro Enomoto, Takashi Hirai, Masaki Ohyagi, Kensuke Ihara, Kie Yoshida-Tanaka, Satoe Ebihara, Ken Asada, Hiroyuki Yokoyama, Atsushi Okawa, Takanori Yokota. Systemic DNA/RNA heteroduplex oligonucleotide administration for regulating the gene expression of dorsal root ganglion and sciatic nerve. Mol Ther Nucleic Acids. 2022.05; 28 910-919. ( PubMed, DOI )

Kanji Mori, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Shunji Tsutsui, Takashi Hirai, Yu Matsukura, Kanichiro Wada, Keiichi Katsumi, Masao Koda, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Norihiro Nishida, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Hideaki Nakajima, Kazuma Murata, Masayuki Miyagi, Takashi Kaito, Kei Yamada, Tomohiro Banno, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Taneichi, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Impact of obesity on cervical ossification of the posterior longitudinal ligament: a nationwide prospective study. Sci Rep. 2022.05; 12 (1): 8884. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shoichi Ichimura, Hiroaki Nakamura, Masatoshi Hoshino, Shinji Takahashi, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Factors Contributing to Residual Low Back Pain after Osteoporotic Vertebral Fractures. J Clin Med. 2022.03; 11 (6): 1566. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Takeo Furuya, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Severity of Myelopathy is Closely Associated With Advanced Age and Signal Intensity Change in Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Nationwide Investigation. Clin Spine Surg. 2022.02; 35 (1): E155-E161. ( PubMed, DOI )

Reina Miyamoto, Takashi Hirai, Toshitaka Yoshii, Hiroaki Onuma, Hiroyuki Inose, Masato Yuasa, Yu Matsukura, Shingo Morishita, Kouhei Yamamoto, Hirotaka Koyanagi, Shingo Sato, Kazuyoshi Yagishita, Atsushi Okawa. Surgical Strategy for Osteoid Osteoma Localized in Anterior Lumbar Vertebral Body: A Case Report. Spine Surg Relat Res. 2022.02; 6 (4): 408-411. ( PubMed, DOI )

Jun Hashimoto, Toshitaka Yoshii, Kenichiro Sakai, Takashi Hirai, Masato Yuasa, Hiroyuki Inose, Atsuyuki Kawabata, Kurando Utagawa, Yu Matsukura, Masaki Tomori, Ichiro Torigoe, Tsuyoshi Yamada, Kazuo Kusano, Kazuyuki Otani, Satoshi Sumiya, Fujiki Numano, Kazuyuki Fukushima, Shoji Tomizawa, Yoshiyasu Arai, Shigeo Shindo, Atsushi Okawa. Impact of body mass index on surgical outcomes and complications in adult spinal deformity. J Orthop Sci. 2022.01; 27 (1): 89-94. ( PubMed, DOI )

Hiroaki Nakashima, Shiro Imagama, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Takeo Furuya, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Narihito Nagoshi, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Yuanying Li, Hiroshi Yatsuya, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa, . Comparison of laminoplasty and posterior fusion surgery for cervical ossification of posterior longitudinal ligament. Sci Rep. 2022.01; 12 (1): 748. ( PubMed, DOI )

Takaki Inoue, Satoshi Maki, Toshitaka Yoshii, Takeo Furuya, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Seiji Ohtori, Masashi Yamazaki, Atsushi Okawa, . Is anterior decompression and fusion more beneficial than laminoplasty for K-line (+) cervical ossification of the posterior longitudinal ligament? An analysis using propensity score matching. J Neurosurg Spine. 2022.01; 37 (1): 13-20. ( PubMed, DOI )

Hiroyuki Inose, Takashi Hirai, Toshitaka Yoshii, Atsushi Kimura, Katsushi Takeshita, Hirokazu Inoue, Asato Maekawa, Kenji Endo, Takuya Miyamoto, Takeo Furuya, Akira Nakamura, Kanji Mori, Shunsuke Kanbara, Shiro Imagama, Shoji Seki, Shunji Matsunaga, Kunihiko Takahashi, Atsushi Okawa. Factors contributing to neck pain in patients with degenerative cervical myelopathy: A prospective multicenter study. J Orthop Surg (Hong Kong). 2022.01; 30 (1): 10225536221091848. ( PubMed, DOI )

Satoshi Maki, Takeo Furuya, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Seiji Ohtori, Masashi Yamazaki, Atsushi Okawa. Machine Learning Approach in Predicting Clinically Significant Improvements After Surgery in Patients with Cervical Ossification of the Posterior Longitudinal Ligament. Spine (Phila Pa 1976). 2021.12; 46 (24): 1683-1689. ( PubMed, DOI )

Narihito Nagoshi, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Takeo Furuya, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Hiroaki Nakashima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Kota Watanabe, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Comparison of Surgical Outcomes After Open- and Double-Door Laminoplasties for Patients with Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Multicenter Study. Spine (Phila Pa 1976). 2021.12; 46 (23): E1238-E1245. ( PubMed, DOI )

Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Atsushi Kimura, Takeo Furuya, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Perioperative Complications in Posterior Surgeries for Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Nationwide Investigation. Clin Spine Surg. 2021.12; 34 (10): E594-E600. ( PubMed, DOI )

Satoru Egawa, Toshitaka Yoshii, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Atsushi Kimura, Takeo Furuya, Tsukasa Kanchiku, Yukitaka Nagamoto, Masahiko Takahata, Kanji Mori, Hiroyuki Katoh, Narihito Nagoshi, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Katsushi Takeshita, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Prospective Investigation of Postoperative Complications in Anterior Decompression with Fusion for Severe Cervical Ossification of the Posterior Longitudinal Ligament: A Multi-institutional Study. Spine (Phila Pa 1976). 2021.12; 46 (23): 1621-1629. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shinichi Shirasawa, Shinji Takahashi, Masatoshi Hoshino, Yu Yamato, Yu Matsukura, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Time Course of Acute Vertebral Fractures: A Prospective Multicenter Cohort Study. J Clin Med. 2021.12; 10 (24): 5961. ( PubMed, DOI )

Rempei Matsumoto, Toshitaka Yoshii, Satoru Egawa, Motonori Hashimoto, Takashi Hirai, Hiroyuki Inose, Yoto Oh, Koji Fujita, Atsushi Okawa, Shinichi Sotome. Local Suppression Effect of Paclitaxel-Impregnated Hydroxyapatite/Collagen on Breast Cancer Bone Metastasis in a Rat Model. Spine Surg Relat Res. 2021.12; 6 (3): 294-302. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Kenichiro Sakai, Hiroyuki Inose, Masato Yuasa, Tsuyoshi Yamada, Yu Matsukura, Shuta Ushio, Shingo Morishita, Satoru Egawa, Hiroaki Onuma, Yutaka Kobayashi, Kurando Utagawa, Jun Hashimoto, Atsuyuki Kawabata, Tomoyuki Tanaka, Takayuki Motoyoshi, Takuya Takahashi, Motonori Hashimoto, Kentaro Sakaeda, Tsuyoshi Kato, Yoshiyasu Arai, Shigenori Kawabata, Atsushi Okawa. Anterior Cervical Corpectomy with Fusion versus Anterior Hybrid Fusion Surgery for Patients with Severe Ossification of the Posterior Longitudinal Ligament Involving Three or More Levels: A Retrospective Comparative Study. J Clin Med. 2021.11; 10 (22): 5315. ( PubMed, DOI )

Motoyoshi Takayuki, Hirai Takashi, Yoshii Toshitaka, Inose Hiroyuki, Matsukura Yu, Egawa Satoru, Kobayashi Yutaka, Utagawa Kurando, Hashimoto Jun, Kawabata Atsuyuki, Takahashi Takuya, Tanaka Tomoyuki, Okawa Atsushi. Association between diffuse idiopathic skeletal hyperostosis and thoracic kyphosis in patients with cervical myelopathy: a retrospective observational study. BMC Musculoskelet Disord. 2021.11; 22 (1): 964. ( PubMed, DOI )

Masao Koda, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Kota Watanabe, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Takahashi, Kengo Fujii, Masayuki Miyagi, Gen Inoue, Masashi Takaso, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Atsushi Okawa, Masashi Yamazaki. Factors Significantly Associated with Postoperative Neck Pain Deterioration after Surgery for Cervical Ossification of the Posterior Longitudinal Ligament: Study of a Cohort Using a Prospective Registry. J Clin Med. 2021.10; 10 (21): 5026. ( PubMed, DOI )

Toshitaka Yoshii, Motonori Hashimoto, Satoru Egawa, Takashi Hirai, Hiroyuki Inose, Atsushi Okawa. Hydroxyapatite/collagen composite graft for posterior lumbar interbody fusion: a comparison with local bone graft. J Orthop Surg Res. 2021.10; 16 (1): 639. ( PubMed, DOI )

Yu Matsukura, Toshitaka Yoshii, Shingo Morishita, Kenichiro Sakai, Takashi Hirai, Masato Yuasa, Hiroyuki Inose, Atsuyuki Kawabata, Kurando Utagawa, Jun Hashimoto, Masaki Tomori, Ichiro Torigoe, Tsuyoshi Yamada, Kazuo Kusano, Kazuyuki Otani, Satoshi Sumiya, Fujiki Numano, Kazuyuki Fukushima, Shoji Tomizawa, Satoru Egawa, Yoshiyasu Arai, Shigeo Shindo, Atsushi Okawa. Comparison of Lateral Lumbar Interbody Fusion and Posterior Lumbar Interbody Fusion as Corrective Surgery for Patients with Adult Spinal Deformity-A Propensity Score Matching Analysis. J Clin Med. 2021.10; 10 (20): 4737. ( PubMed, DOI )

Soraya Nishimura, Takashi Hirai, Narihito Nagoshi, Toshitaka Yoshii, Jun Hashimoto, Kanji Mori, Satoshi Maki, Keiichi Katsumi, Kazuhiro Takeuchi, Shuta Ushio, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Hiroaki Nakashima, Shiro Imagama, Kazuma Murata, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Masahiko Watanabe, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Yu Matsukura, Hiroyuki Inose, Masashi Yamazaki, Kota Watanabe, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi. Association between Severity of Diffuse Idiopathic Skeletal Hyperostosis and Ossification of Other Spinal Ligaments in Patients with Ossification of the Posterior Longitudinal Ligament. J Clin Med. 2021.10; 10 (20): 4690. ( PubMed, DOI )

Takashi Hirai, Takuya Takahashi, Tomoyuki Tanaka, Takayuki Motoyoshi, Yu Matsukura, Masato Yuasa, Hiroyuki Inose, Toshitaka Yoshii, Atsushi Okawa. Intradiscal Injection With Condoliase (Chondroitin Sulfate ABC Endolyase) For Painful Radiculopathy Caused By Lumbar Disc Herniation Spine Surgery and Related Research. 2021.10; ( DOI )

Takashi Hirai, Takuya Takahashi, Tomoyuki Tanaka, Takayuki Motoyoshi, Yu Matsukura, Masato Yuasa, Hiroyuki Inose, Toshitaka Yoshii, Atsushi Okawa. Intradiscal Injection with Condoliase (Chondroitin Sulfate ABC Endolyase) for Painful Radiculopathy Caused by Lumbar Disc Herniation. Spine Surg Relat Res. 2021.10; 6 (3): 252-260. ( PubMed, DOI )

Shuta Ushio, Toshitaka Yoshii, Atsuyuki Kawabata, Tsuyoshi Yamada, Takashi Taniyama, Takashi Hirai, Hiroyuki Inose, Masato Yuasa, Kenichiro Sakai, Ichiro Torigoe, Masaki Tomori, Yoshiyasu Arai, Shigeo Shindo, Kouichi Mizuno, Kazuyuki Otani, Osamu Nakai, Atsushi Okawa. Prognostic factors for neurological outcome after anterior decompression and fusion for proximal-type cervical spondylotic amyotrophy - A retrospective analysis of 77 cases. J Orthop Sci. 2021.09; 26 (5): 733-738. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shoichi Ichimura, Hiroaki Nakamura, Masatoshi Hoshino, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Kunihiko Takahashi, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Risk factors for subsequent vertebral fracture after acute osteoporotic vertebral fractures. Eur Spine J. 2021.09; 30 (9): 2698-2707. ( PubMed, DOI )

Hiroyuki Inose, Yutaka Kobayashi, Shingo Morishita, Yu Matsukura, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Application of an index derived from the area under a neutrophil curve as a predictor of surgical site infection after spinal surgery. BMC Surg. 2021.09; 21 (1): 354. ( PubMed, DOI )

Takashi Hirai, Soraya Nishimura, Toshitaka Yoshii, Narihito Nagoshi, Jun Hashimoto, Kanji Mori, Satoshi Maki, Keiichi Katsumi, Kazuhiro Takeuchi, Shuta Ushio, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Hiroaki Nakashima, Shiro Imagama, Kazuma Murata, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Masahiko Watanabe, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Yu Matsukura, Hiroyuki Inose, Atsushi Okawa, Yoshiharu Kawaguchi. Associations between Clinical Findings and Severity of Diffuse Idiopathic Skeletal Hyperostosis in Patients with Ossification of the Posterior Longitudinal Ligament. J Clin Med. 2021.09; 10 (18): 4137. ( PubMed, DOI )

Kenichiro Sakai, Takashi Hirai, Yoshiyasu Arai, Hidetsugu Maehara, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Kyohei Sakaki, Masato Yuasa, Yu Matsukura, Takuya Oyaizu, Shingo Morishita, Toshitaka Yoshii, Atsushi Okawa. Laminar Closure in Double-door Laminoplasty for Cervical Spondylotic Myelopathy with Nonkyphotic Alignment. Spine (Phila Pa 1976). 2021.08; 46 (15): 999-1006. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Masato Yuasa, Yu Matsukura, Takahisa Ogawa, Kiyohide Fushimi, Atsushi Okawa, Takeo Fujiwara. Comparison of Perioperative Complications in Anterior Decompression With Fusion and Posterior Decompression With Fusion for Cervical Spondylotic Myelopathy: Propensity Score Matching Analysis Using a Nationwide Inpatient Database. Clin Spine Surg. 2021.08; 34 (7): E425-E431. ( PubMed, DOI )

Keiichi Katsumi, Takashi Hirai, Toshitaka Yoshii, Satoshi Maki, Kanji Mori, Narihito Nagoshi, Soraya Nishimura, Kazuhiro Takeuchi, Shuta Ushio, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Kenyu Ito, Shiro Imagama, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Masahiko Watanabe, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Atsushi Okawa, Yoshiharu Kawaguchi. The impact of ossification spread on cervical spine function in patients with ossification of the posterior longitudinal ligament. Sci Rep. 2021.07; 11 (1): 14337. ( PubMed, DOI )

Takashi Hirai, Masashi Uehara, Masayuki Miyagi, Shinji Takahashi, Hiroaki Nakashima. Current Advances in Spinal Diseases of the Elderly: Introduction to the Special Issue. J Clin Med. 2021.07; 10 (15): 3298. ( PubMed, DOI )

Atsushi Kimura, Katsushi Takeshita, Toshitaka Yoshii, Satoru Egawa, Takashi Hirai, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Kanichiro Wada, Keiichi Katsumi, Kengo Fujii, Takeo Furuya, Narihito Nagoshi, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Hiroaki Nakashima, Kei Ando, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Kota Watanabe, Shiro Imagama, Masao Koda, Yoshiharu Kawaguchi, Masaya Nakamura, Morio Matsumoto, Masashi Yamazaki, Atsushi Okawa. Impact of Diabetes Mellitus on Cervical Spine Surgery for Ossification of the Posterior Longitudinal Ligament. J Clin Med. 2021.07; 10 (15): 3375. ( PubMed, DOI )

Masao Koda, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Kazuo Kusano, Yukihiro Nakagawa, Takashi Hirai, Kanichiro Wada, Keiichi Katsumi, Atsushi Kimura, Takeo Furuya, Satoshi Maki, Narihito Nagoshi, Kota Watanabe, Tsukasa Kanchiku, Yukitaka Nagamoto, Yasushi Oshima, Kei Ando, Hiroaki Nakashima, Masahiko Takahata, Kanji Mori, Hideaki Nakajima, Kazuma Murata, Shunji Matsunaga, Takashi Kaito, Kei Yamada, Sho Kobayashi, Satoshi Kato, Tetsuro Ohba, Satoshi Inami, Shunsuke Fujibayashi, Hiroyuki Katoh, Haruo Kanno, Hiroshi Takahashi, Kengo Fujii, Masayuki Miyagi, Gen Inoue, Masashi Takaso, Shiro Imagama, Yoshiharu Kawaguchi, Katsushi Takeshita, Masaya Nakamura, Morio Matsumoto, Atsushi Okawa, Masashi Yamazaki. Neurological improvement is associated with neck pain attenuation after surgery for cervical ossification of the posterior longitudinal ligament. Sci Rep. 2021.06; 11 (1): 11910. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Hiroaki Onuma, Shingo Morishita, Yu Matsukura, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Predictive Factors Affecting Surgical Outcomes in Patients with Degenerative Lumbar Spondylolisthesis. Spine (Phila Pa 1976). 2021.05; 46 (9): 610-616. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shoichi Ichimura, Hiroaki Nakamura, Masatoshi Hoshino, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Predictors of residual low back pain after acute osteoporotic compression fracture. J Orthop Sci. 2021.05; 26 (3): 453-458. ( PubMed, DOI )

Inose H, Hirai T, Yoshii T, Kimura A, Takeshita K, Inoue H, Maekawa A, Endo K, Miyamoto T, Furuya T, Nakamura A, Mori K, Kanbara S, Imagama S, Seki S, Matsunaga S, Okawa A. Predictors for quality of life improvement after surgery for degenerative cervical myelopathy: a prospective multi-center study. Health and quality of life outcomes. 2021.05; 19 (1): 150. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Yoshiyasu Arai, Takashi Hirai, Ichiro Torigoe, Hiroyuki Inose, Masaki Tomori, Kyohei Sakaki, Masato Yuasa, Tsuyoshi Yamada, Yu Matsukura, Takuya Oyaizu, Shingo Morishita, Atsushi Okawa. A Prospective Cohort Study of Dysphagia After Subaxial Cervical Spine Surgery. Spine (Phila Pa 1976). 2021.04; 46 (8): 492-498. ( PubMed, DOI )

Atsuyuki Kawabata, Toshitaka Yoshii, Kenichiro Sakai, Takashi Hirai, Masato Yuasa, Hiroyuki Inose, Yu Matsukura, Shingo Morishita, Masaki Tomori, Ichiro Torigoe, Kazuo Kusano, Kazuyuki Otani, Yoshiyasu Arai, Shigeo Shindo, Atsushi Okawa. Sagittal alignment changes and postoperative complications following surgery for adult spinal deformity in patients with Parkinson's disease: a multi-institutional retrospective cohort study. BMC Musculoskelet Disord. 2021.04; 22 (1): 357. ( PubMed, DOI )

Inose H, Hirai T, Yoshii T, Kimura A, Takeshita K, Inoue H, Maekawa A, Endo K, Furuya T, Nakamura A, Mori K, Kanbara S, Imagama S, Seki S, Matsunaga S, Takahashi K, Okawa A. Predictors associated with neurological recovery after anterior decompression with fusion for degenerative cervical myelopathy. BMC surgery. 2021.03; 21 (1): 144. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Yu Matsukura, Shingo Morishita, Hiroaki Onuma, Tomoyuki Tanaka, Atsushi Okawa. Ann Case Rep, an open access journal Annals of Case Reports Case Report Cauda Equina Caused by Lumbar Canal Stenosis Following Intradical Injection of Condoliase: Case Report Annals of Medicine. 2021.03; 6 (2): 1-3. ( DOI )

Hiroyuki Inose, Tsuyoshi Kato, Hiroaki Nakamura, Masatoshi Hoshino, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Kunihiko Takahashi, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Predictors for quality of life improvement after acute osteoporotic vertebral fracture: results of post hoc analysis of a prospective randomized study. Qual Life Res. 2021.01; 30 (1): 129-135. ( PubMed, DOI )

Satoshi Sumiya, Kazuyuki Fukushima, Yoshiro Kurosa, Takashi Hirai, Hiroyuki Inose, Toshitaka Yoshii, Atsushi Okawa. Comparative analysis of clinical factors associated with pedicle screw pull-out during or immediately after surgery between intraoperative cone-beam computed tomography and postoperative computed tomography. BMC Musculoskelet Disord. 2021.01; 22 (1): 55. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Atsushi Okawa, Hiroyuki Inose, Takashi Hirai, Takahisa Ogawa, Kiyohide Fushimi, Takeo Fujiwara. Comparison of Perioperative Complications Between Anterior Fusion and Posterior Fusion for Osteoporotic Vertebral Fractures in Elderly Patients: Propensity Score-Matching Analysis Using Nationwide Inpatient Database. Clin Spine Surg. 2020.12; 33 (10): E586-E592. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Shuta Ushio, Jun Hashimoto, Kanji Mori, Satoshi Maki, Keiichi Katsumi, Narihito Nagoshi, Kazuhiro Takeuchi, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Soraya Nishimura, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Kenyu Ito, Shiro Imagama, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Masahiko Watanabe, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Masato Yuasa, Hiroyuki Inose, Atsushi Okawa, Yoshiharu Kawaguchi. Associations between Clinical Symptoms and Degree of Ossification in Patients with Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Multi-Institutional Cross-Sectional Study. J Clin Med. 2020.12; 9 (12): 4055. ( PubMed, DOI )

Hiroyuki Yokoyama, Takashi Hirai, Tetsuya Nagata, Mitsuhiro Enomoto, Hidetoshi Kaburagi, Li Leiyo, Takayuki Motoyoshi, Toshitaka Yoshii, Atsushi Okawa, Takanori Yokota. DNA Microarray Analysis of Differential Gene Expression in the Dorsal Root Ganglia of Four Different Neuropathic Pain Mouse Models. J Pain Res. 2020.11; 13 3031-3043. ( PubMed, DOI )

Shingo Morishita, Toshitaka Yoshii, Atsushi Okawa, Hiroyuki Inose, Takashi Hirai, Masato Yuasa, Kiyohide Fushimi, Takeo Fujiwara. Risk factors related to perioperative systemic complications and mortality in elderly patients with osteoporotic vertebral fractures-analysis of a large national inpatient database. J Orthop Surg Res. 2020.11; 15 (1): 518. ( PubMed, DOI )

Hiroaki Onuma, Hiroyuki Inose, Toshitaka Yoshii, Takashi Hirai, Masato Yuasa, Shigenori Kawabata, Atsushi Okawa. Preoperative risk factors for delirium in patients aged ≥75 years undergoing spinal surgery: a retrospective study. J Int Med Res. 2020.10; 48 (10): 300060520961212. ( PubMed, DOI )

Kawabata A, Yoshii T, Sakai K, Hirai T, Yuasa M, Inose H, Utagawa K, Hashimoto J, Matsukura Y, Tomori M, Torigoe I, Kusano K, Otani K, Mizuno K, Satoshi S, Kazuyuki F, Tomizawa S, Arai Y, Shindo S, Okawa A. Identification of Predictive Factors for Mechanical Complications After Adult Spinal Deformity Surgery: A Multi-Institutional Retrospective Study. Spine(Phila Pa 1976). 2020.09; 45 (17): 1185-1192. ( PubMed, DOI )

Kanji Mori, Toshitaka Yoshii, Takashi Hirai, Narihito Nagoshi, Kazuhiro Takeuchi, Shuta Ushio, Akio Iwanami, Tsuyoshi Yamada, Shoji Seki, Takashi Tsuji, Kanehiro Fujiyoshi, Mitsuru Furukawa, Soraya Nishimura, Kanichiro Wada, Takeo Furuya, Yukihiro Matsuyama, Tomohiko Hasegawa, Katsushi Takeshita, Atsushi Kimura, Masahiko Abematsu, Hirotaka Haro, Tetsuro Ohba, Masahiko Watanabe, Hiroyuki Katoh, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Kei Ando, Shunsuke Fujibayashi, Masao Koda, Masashi Yamazaki, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi. The characteristics of the patients with radiologically severe cervical ossification of the posterior longitudinal ligament of the spine: A CT-based multicenter cross-sectional study. J Orthop Sci. 2020.09; 25 (5): 746-750. ( PubMed, DOI )

Toshitaka Yoshii, Shingo Morishita, Hiroyuki Inose, Masato Yuasa, Takashi Hirai, Atsushi Okawa, Kiyohide Fushimi, Takeo Fujiwara. Comparison of Perioperative Complications in Anterior Decompression With Fusion and Posterior Decompression With Fusion for Cervical Ossification of the Posterior Longitudinal Ligament: Propensity Score Matching Analysis Using a Nation-Wide Inpatient Database. Spine (Phila Pa 1976). 2020.08; 45 (16): E1006-E1012. ( PubMed, DOI )

Takumi Kaku, Yoto Oh, Shingo Sato, Hirotaka Koyanagi, Takashi Hirai, Masato Yuasa, Toshitaka Yoshii, Tsuyoshi Nakagawa, Satoshi Miyake, Atsushi Okawa. Incidence of atypical femoral fractures in the treatment of bone metastasis: An alert report. J Bone Oncol. 2020.08; 23 100301. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Shoichi Ichimura, Hiroaki Nakamura, Masatoshi Hoshino, Daisuke Togawa, Toru Hirano, Yasuaki Tokuhashi, Tetsuro Ohba, Hirotaka Haro, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Risk Factors of Nonunion After Acute Osteoporotic Vertebral Fractures: A Prospective Multicenter Cohort Study. Spine. 2020.07; 45 (13): 895-902. ( PubMed, DOI )

Atsuyuki Kawabata, Toshitaka Yoshii, Takashi Hirai, Shuta Ushio, Takashi Kaito, Tomoya Yamashita, Hiroyasu Fujiwara, Yukitaka Nagamoto, Yuji Matsuoka, Hidekazu Suzuki, Hirosuke Nishimura, Hidetomi Terai, Koji Tamai, Atsushi Tagami, Syuta Yamada, Shinji Adachi, Kei Watanabe, Keiichi Katsumi, Masayuki Ohashi, Yohei Shibuya, Katsumi Harimaya, Kenichi Kawaguchi, Nobuhiko Yokoyama, Hidekazu Oishi, Toshiro Doi, Atsushi Kimura, Hirokazu Inoue, Gen Inoue, Masayuki Miyagi, Wataru Saito, Atsushi Nakano, Daisuke Sakai, Tadashi Nukaga, Shota Ikegami, Masayuki Shimizu, Toshimasa Futatsugi, Seiji Ohtori, Takeo Furuya, Sumihisa Orita, Shiro Imagama, Kei Ando, Kazuyoshi Kobayashi, Katsuhito Kiyasu, Hideki Murakami, Katsuhito Yoshioka, Shoji Seki, Michio Hongo, Kenichiro Kakutani, Takashi Yurube, Yasuchika Aoki, Masashi Oshima, Masahiko Takahata, Akira Iwata, Hirooki Endo, Tetsuya Abe, Toshinori Tsukanishi, Kazuyoshi Nakanishi, Kota Watanabe, Tomohiro Hikata, Satoshi Suzuki, Norihiro Isogai, Eijiro Okada, Haruki Funao, Seiji Ueda, Yuta Shiono, Kenya Nojiri, Naobumi Hosogane, Ken Ishii. Effect of bisphosphonates or teriparatide on mechanical complications after posterior instrumented fusion for osteoporotic vertebral fracture: a multi-center retrospective study. BMC Musculoskelet Disord. 2020.07; 21 (1): 420. ( PubMed, DOI )

Toshitaka Yoshii, Shoji Tomizawa, Takashi Hirai, Hiroyuki Inose, Tsuyoshi Yamada, Kenichiro Sakai, Shuta Ushio, Satoru Egawa, Masato Yuasa, Tsuyoshi Kato, Shigenori Kawabata, Yoshiyasu Arai, Atsushi Okawa. Surgical Outcomes in Selective Laminectomy and Conventional Double-Door Laminoplasty for Cervical Spondylotic Myelopathy. Orthopedics. 2020.07; 43 (4): e311-e315. ( PubMed, DOI )

Atsuyuki Kawabata, Takashi Hirai, Ryo Tohara, Masato Yuasa, Hiroyuki Inose, Hirotaka Koyanagi, Shingo Sato, Kurando Utagawa, Jun Hashimoto, Atsushi Okawa, Toshitaka Yoshii. Surgical stabilization of spinal metastasis in diffuse idiopathic skeletal hyperostosis ("Mets-on-DISH"): Two case reports. Medicine (Baltimore). 2020.05; 99 (22): e20397. ( PubMed, DOI )

Leyang Li, Hiroyuki Yokoyama, Hidetoshi Kaburagi, Takashi Hirai, Kunikazu Tsuji, Mitsuhiro Enomoto, Yoshiaki Wakabayashi, Atsushi Okawa. Remnant neuromuscular junctions in denervated muscles contribute to functional recovery in delayed peripheral nerve repair. Neural Regen Res. 2020.04; 15 (4): 731-738. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Shuta Ushio, Kanji Mori, Satoshi Maki, Keiichi Katsumi, Narihito Nagoshi, Kazuhiro Takeuchi, Takeo Furuya, Kei Watanabe, Norihiro Nishida, Kota Watanabe, Takashi Kaito, Satoshi Kato, Katsuya Nagashima, Masao Koda, Kenyu Ito, Shiro Imagama, Yuji Matsuoka, Kanichiro Wada, Atsushi Kimura, Tetsuro Ohba, Hiroyuki Katoh, Yukihiro Matsuyama, Hiroshi Ozawa, Hirotaka Haro, Katsushi Takeshita, Masahiko Watanabe, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Atsushi Okawa, Yoshiharu Kawaguchi. Clinical characteristics in patients with ossification of the posterior longitudinal ligament: A prospective multi-institutional cross-sectional study. Sci Rep. 2020.03; 10 (1): 5532. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, Hiroyuki Inose, Masato Yuasa, Tsuyoshi Yamada, Shuta Ushio, Tsuyoshi Kato, Yoshiyasu Arai, Shigenori Kawabata, Shigeo Shindo, Osamu Nakai, Atsushi Okawa. Increased Height of Fused Segments Contributes to Early-Phase Strut Subsidence after Anterior Cervical Corpectomy with Fusion for Multilevel Ossification of the Posterior Longitudinal Ligament. Spine Surg Relat Res. 2020.03; 4 (4): 294-299. ( PubMed, DOI )

Yutaka Kobayashi, Hiroyuki Inose, Shuta Ushio, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Body Mass Index and Modified Glasgow Prognostic Score Are Useful Predictors of Surgical Site Infection After Spinal Instrumentation Surgery: A Consecutive Series. Spine. 2020.02; 45 (3): E148-E154. ( PubMed, DOI )

Mieradili Mulati, Yutaka Kobayashi, Akira Takahashi, Hoashi Numata, Masanori Saito, Yuichi Hiraoka, Hiroki Ochi, Shingo Sato, Yoichi Ezura, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa, Hiroyuki Inose. The long noncoding RNA Crnde regulates osteoblast proliferation through the Wnt/β-catenin signaling pathway in mice. Bone. 2020.01; 130 115076. ( PubMed, DOI )

Hiroyuki Inose, Yutaka Kobayashi, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Postoperative lymphocyte percentage and neutrophil-lymphocyte ratio are useful markers for the early prediction of surgical site infection in spinal decompression surgery. J Orthop Surg (Hong Kong). 2020.01; 28 (2): 2309499020918402. ( PubMed, DOI )

Toshitaka Yoshii, Satoru Egawa, Takashi Hirai, Takashi Kaito, Kanji Mori, Masao Koda, Hirotaka Chikuda, Tomohiko Hasegawa, Shiro Imagama, Masahiro Yoshida, Motoki Iwasaki, Atsushi Okawa, Yoshiharu Kawaguchi. A systematic review and meta-analysis comparing anterior decompression with fusion and posterior laminoplasty for cervical ossification of the posterior longitudinal ligament. J Orthop Sci. 2020.01; 25 (1): 58-65. ( PubMed, DOI )

Hiroyuki Inose, Yutaka Kobayashi, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Procalcitonin and Neutrophil Lymphocyte Ratio After Spinal Instrumentation Surgery. Spine（Phila pa 1976) . 2019.12; 44 (23): E1356-E1361. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Tsuyoshi Yamada, Shuta Ushio, Hiroaki Onuma, Keigo Hirai, Yutaka Kobayashi, Kurando Utagawa, Jun Hashimoto, Atsuyuki Kawabata, Kenichiro Sakai, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa. Is Modified K-line a Powerful Tool of Surgical Decision Making for Patients With Cervical Spondylotic Myelopathy? Clin Spine Surg. 2019.11; 32 (9): 351-356. ( PubMed, DOI )

Tsuyoshi Yamada, Toshitaka Yoshii, Shuta Ushio, Takashi Taniyama, Takashi Hirai, Hiroyuki Inose, Kenichiro Sakai, Shigeo Shindo, Yoshiyasu Arai, Atsushi Okawa. Surgical outcomes for distal-type cervical spondylotic amyotrophy: a multicenter retrospective analysis of 43 cases. Eur Spine J. 2019.10; 28 (10): 2333-2341. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Takahiro Tanimoto, Shuta Ushio, Shinichi Sasaki, Hiroyuki Inose, Masato Yuasa, Atsushi Okawa. Thoracic myelopathy caused by an extremely rare aberrant epidural ligament: A case report. Medicine (Baltimore). 2019.10; 98 (41): e17344. ( PubMed, DOI )

Satoshi Sumiya, Shigenori Kawabata, Shuta Ushio, Shoji Tomizawa, Kyohei Sakaki, Takashi Hirai, Masato Yuasa, Hiroyuki Inose, Toshitaka Yoshii, Atsushi Okawa. Cervical Spinal Cord Injury Associated With Neck Flexion in Posterior Cervical Decompression. Clin Spine Surg. 2019.06; 32 (5): E221-E227. ( PubMed, DOI )

Shuta Ushio, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masahito Yuasa, Shigenori Kawabata, Atsushi Okawa. Preoperative Risk Factors for Adjacent Segment Degeneration after Two-Level Floating Posterior Fusion at L3-L5. Spine Surg Relat Res. 2019.04; 4 (1): 43-49. ( PubMed, DOI )

Tsuyoshi Yamada, Toshitaka Yoshii, Yu Matsukura, Takuya Oyaizu, Masato Yuasa, Takashi Hirai, Kyohei Sakaki, Hiroyuki Inose, Ichiro Torigoe, Kenichiro Sakai, Atsushi Okawa, Yoshiyasu Arai. Retrospective analysis of surgical outcomes for atlantoaxial subluxation. J Orthop Surg Res. 2019.03; 14 (1): 75. ( PubMed, DOI )

Tsuyoshi Kato, Hiroyuki Inose, Shoichi Ichimura, Yasuaki Tokuhashi, Hiroaki Nakamura, Masatoshi Hoshino, Daisuke Togawa, Toru Hirano, Hirotaka Haro, Tetsuro Ohba, Takashi Tsuji, Kimiaki Sato, Yutaka Sasao, Masahiko Takahata, Koji Otani, Suketaka Momoshima, Ukihide Tateishi, Makoto Tomita, Ryuichi Takemasa, Masato Yuasa, Takashi Hirai, Toshitaka Yoshii, Atsushi Okawa. Comparison of Rigid and Soft-Brace Treatments for Acute Osteoporotic Vertebral Compression Fracture: A Prospective, Randomized, Multicenter Study. J Clin Med. 2019.02; 8 (2): ( PubMed, DOI )

Toshitaka Yoshii, Takashi Hirai, Akio Iwanami, Narihito Nagoshi, Kazuhiro Takeuchi, Kanji Mori, Tsuyoshi Yamada, Shoji Seki, Takashi Tsuji, Kanehiro Fujiyoshi, Mitsuru Furukawa, Soraya Nishimura, Kanichiro Wada, Masao Koda, Takeo Furuya, Yukihiro Matsuyama, Tomohiko Hasegawa, Katsushi Takeshita, Atsushi Kimura, Masahiko Abematsu, Hirotaka Haro, Tetsuro Ohba, Masahiko Watanabe, Hiroyuki Katoh, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Kei Ando, Shunsuke Fujibayashi, Morio Matsumoto, Masaya Nakamura, Masashi Yamazaki, Atsushi Okawa, Yoshiharu Kawaguchi. Co-existence of ossification of the nuchal ligament is associated with severity of ossification in the whole spine in patients with cervical ossification of the posterior longitudinal ligament -A multi-center CT study. J Orthop Sci. 2019.01; 24 (1): 35-41. ( PubMed, DOI )

Takashi Hirai, Takashi Taniyama, Toshitaka Yoshii, Koichi Mizuno, Mikio Okamoto, Hiroyuki Inose, Masato Yuasa, Kazuyuki Otani, Shigeo Shindo, Osamu Nakai, Atsushi Okawa. Clinical Outcomes of Surgical Treatment for Arachnoid Web: A Case Series. Spine Surg Relat Res. 2019.01; 3 (1): 43-48. ( PubMed, DOI )

Hiroaki Onuma, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Shigenori Kawabata, Atsushi Okawa. Clinical and radiologic outcomes of bone grafted and non-bone grafted double-door laminoplasty, the modified Kirita-Miyazaki method, for treatment of cervical spondylotic myelopathy: Five-year follow-up. J Orthop Sci. 2018.11; 23 (6): 923-928. ( PubMed, DOI )

Soraya Nishimura, Narihito Nagoshi, Akio Iwanami, Ayano Takeuchi, Takashi Hirai, Toshitaka Yoshii, Kazuhiro Takeuchi, Kanji Mori, Tsuyoshi Yamada, Shoji Seki, Takashi Tsuji, Kanehiro Fujiyoshi, Mitsuru Furukawa, Kanichiro Wada, Masao Koda, Takeo Furuya, Yukihiro Matsuyama, Tomohiko Hasegawa, Katsushi Takeshita, Atsushi Kimura, Masahiko Abematsu, Hirotaka Haro, Tetsuro Ohba, Masahiko Watanabe, Hiroyuki Katoh, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Kei Ando, Shunsuke Fujibayashi, Masashi Yamazaki, Kota Watanabe, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi, . Prevalence and Distribution of Diffuse Idiopathic Skeletal Hyperostosis on Whole-spine Computed Tomography in Patients With Cervical Ossification of the Posterior Longitudinal Ligament: A Multicenter Study. Clin Spine Surg. 2018.11; 31 (9): E460-E465. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Kato, Masato Yuasa, Tsuyoshi Yamada, Hidetsugu Maehara, Takashi Hirai, Toshitaka Yoshii, Shigenori Kawabata, Atsushi Okawa. Comparison of Decompression, Decompression Plus Fusion, and Decompression Plus Stabilization for Degenerative Spondylolisthesis: A Prospective, Randomized Study. Clin Spine Surg. 2018.08; 31 (7): E347-E352. ( PubMed, DOI )

Toshitaka Yoshii, Takashi Hirai, Tsuyoshi Yamada, Kenichiro Sakai, Shuta Ushio, Satoru Egawa, Masato Yuasa, Tsuyoshi Kato, Hiroyuki Inose, Shigenori Kawabata, Atsushi Okawa. A Prospective Comparative Study in Skin Antiseptic Solutions for Posterior Spine Surgeries: Chlorhexidine-Gluconate Ethanol Versus Povidone-Iodine. Clin Spine Surg. 2018.08; 31 (7): E353-E356. ( PubMed, DOI )

Shingo Morishita, Yoshiyasu Arai, Toshitaka Yoshii, Kenichiro Sakai, Takashi Hirai, Atsushi Okawa. Lumbar epidural lipomatosis is associated with visceral fat and metabolic disorders. Eur Spine J. 2018.07; 27 (7): 1653-1661. ( PubMed, DOI )

Hirai T, Yoshii T, Inose H, Yamada T, Yuasa M, Ushio S, Egawa S, Hirai K, Okawa A.. Revision Surgery for Short Segment Fusion Influences Postoperative Low Back Pain and Lower Extremity Pain: A Retrospective Single-Center Study of Patient-Based Evaluation. Spine. Surg. Related Res.. 2018.07; 2 (3): 215-220.

Takashi Hirai, Takashi Taniyama, Toshitaka Yoshii, Koichi Mizuno, Mikio Okamoto, Hiroyuki Inose, Masato Yuasa, Kazuyuki Otani, Shigeo Shindo, Osamu Nakai, Atsushi Okawa. Clinical Outcomes of Surgical Treatment for Arachnoid Web: A Case Series Spine Surgery and Related Research. 2018.07; 3 (1): 43-48. ( DOI )

Takashi Hirai, Toshitaka Yoshii, Narihito Nagoshi, Kazuhiro Takeuchi, Kanji Mori, Shuta Ushio, Akio Iwanami, Tsuyoshi Yamada, Shoji Seki, Takashi Tsuji, Kanehiro Fujiyoshi, Mitsuru Furukawa, Soraya Nishimura, Kanichiro Wada, Takeo Furuya, Yukihiro Matsuyama, Tomohiko Hasegawa, Katsushi Takeshita, Atsushi Kimura, Masahiko Abematsu, Hirotaka Haro, Tetsuro Ohba, Masahiko Watanabe, Hiroyuki Katoh, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Kei Ando, Shunsuke Fujibayashi, Masao Koda, Masashi Yamazaki, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi. Distribution of ossified spinal lesions in patients with severe ossification of the posterior longitudinal ligament and prediction of ossification at each segment based on the cervical OP index classification: a multicenter study (JOSL CT study). BMC Musculoskelet Disord. 2018.04; 19 (1): 107. ( PubMed, DOI )

Yamada Tsuyoshi, Yoshii Toshitaka, Yamamoto Naoki, Hirai Takashi, Inose Hiroyuki, Okawa Atsushi. Surgical outcomes for lumbar spinal canal stenosis with coexisting cervical stenosis (tandem spinal stenosis): a retrospective analysis of 565 cases. J Orthop Surg Res. 2018.03; 13 (1): 60. ( PubMed, DOI )

Amano Eiichiro, Ozaki Kokoro, Egawa Satoru, Suzuki Motohiro, Hirai Takashi, Ishibashi Satoru, Ohkubo Takuya, Yoshii Toshitaka, Okawa Atsushi, Yokota Takanori. Dynamic spinal compression revealed by computed tomography myelography in overshunting-associated myelopathy: A case report. Medicine (Baltimore). 2018.03; 97 (10): e0082. ( PubMed, DOI )

Inose H, Yamada T, Hirai T, Yoshii T, Abe Y, Okawa A.. The impact of sarcopenia on the results of lumbar spinal surgery. Osteoporosis and Sarcopenia. 2018.03; 4 (1): 33-36. ( PubMed, DOI )

Yamada Tsuyoshi, Yoshii Toshitaka, Yamamoto Naoki, Hirai Takashi, Inose Hiroyuki, Kato Tsuyoshi, Kawabata Shigenori, Okawa Atsushi. Clinical Outcomes of Cervical Spinal Surgery for Cervical Myelopathic Patients With Coexisting Lumbar Spinal Canal Stenosis (Tandem Spinal Stenosis): A Retrospective Analysis of 297 Cases. Spine (Phila Pa 1976). 2018.02; 43 (4): E234-E241. ( PubMed, DOI )

Hiroyuki Inose, Tsuyoshi Yamada, Mieradili Mulati, Takashi Hirai, Shuta Ushio, Toshitaka Yoshii, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa. Bone Turnover Markers as a New Predicting Factor for Nonunion After Spinal Fusion Surgery. Spine. 2018.01; 43 (1): E29-E34. ( PubMed, DOI )

Hirai Takashi, Yoshii Toshitaka, Sakai Kenichiro, Inose Hiroyuki, Yamada Tsuyoshi, Kato Tsuyoshi, Kawabata Shigenori, Arai Yoshiyasu, Shinomiya Kenichi, Okawa Atsushi. Long-term results of a prospective study of anterior decompression with fusion and posterior decompression with laminoplasty for treatment of cervical spondylotic myelopathy. J Orthop Sci. 2018.01; 23 (1): 32-38. ( PubMed, DOI )

Hirai T, Yoshii T, Inose H, Yamada T, Yuasa M, Ushio S, Egawa S, Hirai K, Okawa A. Revision Surgery for Short Segment Fusion Influences Postoperative Low Back Pain and Lower Extremity Pain: A Retrospective Single-Center Study of Patient-Based Evaluation. Spine surgery and related research. 2018; 2 (3): 215-220. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Yoshiyasu Arai, Kenichiro Sakai, Ichiro Torigoe, Hidetsugu Maehara, Masaki Tomori, Takashi Taniyama, Hirokazu Sato, Atsushi Okawa. A Comparative Study of Anterior Decompression With Fusion and Posterior Decompression With Laminoplasty for the Treatment of Cervical Spondylotic Myelopathy Patients With Large Anterior Compression of the Spinal Cord. Clin Spine Surg. 2017.10; 30 (8): E1137-E1142. ( PubMed, DOI )

Takashi Hirai, Yatendra Mulpuri, Yanbing Cheng, Zheng Xia, Wei Li, Supanigar Ruangsri, Igor Spigelman, Ichiro Nishimura. Aberrant plasticity of peripheral sensory axons in a painful neuropathy. Sci Rep. 2017.06; 7 (1): 3407. ( PubMed, DOI )

Yamada T, Yoshii T, Egawa S, Hirai T, Inose H, Okawa A.. Multiple Infarctions Due to Vertebral Arterial Occlusion Associated with Atlantoaxial Subluxation in Patients with Rheumatoid Arthritis: A Case Report. OMICS J Radiol. 2017.05; S2:003. ( DOI )

Toshitaka Yoshii, Takashi Hirai, Kenichiro Sakai, Shinichi Sotome, Mitsuhiro Enomoto, Tsuyoshi Yamada, Hiroyuki Inose, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa. Anterior Cervical Corpectomy and Fusion Using a Synthetic Hydroxyapatite Graft for Ossification of the Posterior Longitudinal Ligament. Orthopedics. 2017.03; 40 (2): e334-e339. ( PubMed, DOI )

Toshitaka Yoshii, Takashi Hirai, Tsuyoshi Yamada, Hiroyuki Inose, Tsuyoshi Kato, Kenichiro Sakai, Mitsuhiro Enomoto, Shigenori Kawabata, Yoshiyasu Arai, Atsushi Okawa. Intraoperative evaluation using mobile computed tomography in anterior cervical decompression with floating method for massive ossification of the posterior longitudinal ligament. J Orthop Surg Res. 2017.01; 12 (1): 12. ( PubMed, DOI )

Kenichiro Sakai, Toshitaka Yoshii, Takashi Hirai, Yoshiyasu Arai, Kenichi Shinomiya, Atsushi Okawa. Impact of the surgical treatment for degenerative cervical myelopathy on the preoperative cervical sagittal balance: a review of prospective comparative cohort between anterior decompression with fusion and laminoplasty. Eur Spine J. 2017.01; 26 (1): 104-112. ( PubMed, DOI )

Kanji Mori, Toshitaka Yoshii, Takashi Hirai, Akio Iwanami, Kazuhiro Takeuchi, Tsuyoshi Yamada, Shoji Seki, Takashi Tsuji, Kanehiro Fujiyoshi, Mitsuru Furukawa, Soraya Nishimura, Kanichiro Wada, Masao Koda, Takeo Furuya, Yukihiro Matsuyama, Tomohiko Hasegawa, Katsushi Takeshita, Atsushi Kimura, Masahiko Abematsu, Hirotaka Haro, Tetsuro Ohba, Masahiko Watanabe, Hiroyuki Katoh, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Zenya Ito, Shunsuke Fujibayashi, Masashi Yamazaki, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi. Prevalence and distribution of ossification of the supra/interspinous ligaments in symptomatic patients with cervical ossification of the posterior longitudinal ligament of the spine: a CT-based multicenter cross-sectional study. BMC Musculoskelet Disord. 2016.12; 17 (1): 492. ( PubMed, DOI )

Toshitaka Yoshii, Kenichiro Sakai, Takashi Hirai, Tsuyoshi Yamada, Hiroyuki Inose, Tsuyoshi Kato, Mitsuhiro Enomoto, Shoji Tomizawa, Shigenori Kawabata, Yoshiyasu Arai, Atsushi Okawa. Anterior decompression with fusion versus posterior decompression with fusion for massive cervical ossification of the posterior longitudinal ligament with a ≥50% canal occupying ratio: a multicenter retrospective study. Spine J. 2016.11; 16 (11): 1351-1357. ( PubMed, DOI )

Tsuyoshi Yamada, Toshitaka Yoshii, Takashi Hirai, Hiroyuki Inose, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa. Clinical Outcomes of Spinal Surgery for Patients Undergoing Hemodialysis. Orthopedics. 2016.09; 39 (5): e863-e868. ( PubMed, DOI )

Tsuyoshi Yamada, Toshitaka Yoshii, Satoru Egawa, Ryohei Takada, Takashi Hirai, Hiroyuki Inose, Tsuyoshi Kato, Tetsuya Jinno, Atsushi Okawa. Drain Tip Culture is Not Prognostic for Surgical Site Infection in Spinal Surgery Under Prophylactic Use of Antibiotics. Spine. 2016.07; 41 (14): 1179-1184. ( PubMed, DOI )

Toshitaka Yoshii, Takashi Hirai, Kenichiro Sakai, Hiroyuki Inose, Tsuyoshi Kato, Atsushi Okawa. Cervical pedicle screw placement using intraoperative computed tomography imaging with a mobile scanner gantry. Eur Spine J. 2016.06; 25 (6): 1690-1697. ( PubMed, DOI )

Takashi Hirai, Toshitaka Yoshii, Akio Iwanami, Kazuhiro Takeuchi, Kanji Mori, Tsuyoshi Yamada, Kanichiro Wada, Masao Koda, Yukihiro Matsuyama, Katsushi Takeshita, Masahiko Abematsu, Hirotaka Haro, Masahiko Watanabe, Kei Watanabe, Hiroshi Ozawa, Haruo Kanno, Shiro Imagama, Shunsuke Fujibayashi, Masashi Yamazaki, Morio Matsumoto, Masaya Nakamura, Atsushi Okawa, Yoshiharu Kawaguchi. Prevalence and Distribution of Ossified Lesions in the Whole Spine of Patients with Cervical Ossification of the Posterior Longitudinal Ligament A Multicenter Study (JOSL CT study). PLoS ONE. 2016; 11 (8): e0160117. ( PubMed, DOI )

Mitsuhiro Enomoto, Takashi Hirai, Hidetoshi Kaburagi, Takanori Yokota. Efficient Gene Suppression in Dorsal Root Ganglia and Spinal Cord Using Adeno-Associated Virus Vectors Encoding Short-Hairpin RNA. Methods Mol. Biol.. 2016; 1364 277-290. ( PubMed, DOI )

Sakai Kenichiro, Yoshii Toshitaka, Hirai Takashi, Arai Yoshiyasu, Torigoe Ichiro, Tomori Masaki, Sato Hirokazu, Okawa Atsushi. CERVICAL SAGITTAL IMBALANCE IS A PREDICTOR OF KYPHOTIC DEFORMITY AFTER LAMINOPLASTY IN CERVICAL SPONDYLOTIC MYELOPATHY PATIENTS WITHOUT PREOPERATIVE KYPHOTIC ALIGNMENT. Spine (Phila Pa 1976). 2015.09; ( PubMed, DOI )

Yoshii Toshitaka, Hirai Takashi, Yamada Tsuyoshi, Sumiya Satoshi, Mastumoto Renpei, Kato Tsuyoshi, Enomoto Mitsuhiro, Inose Hiroyuki, Kawabata Shigenori, Shinomiya Kenichi, Okawa Atsushi. Lumbosacral pedicle screw placement using a fluoroscopic pedicle axis view and a cannulated tapping device. J Orthop Surg Res. 2015; 10 79. ( PubMed, DOI )

Madoka Onuma-Ukegawa, Kush Bhatt, Takashi Hirai, Hidetoshi Kaburagi, Shinichi Sotome, Yoshiaki Wakabayashi, Shizuko Ichinose, Kenichi Shinomiya, Atsushi Okawa, Mitsuhiro Enomoto. Bone Marrow Stromal Cells Combined With a Honeycomb Collagen Sponge Facilitate Neurite Elongation In Vitro and Neural Restoration in the Hemisected Rat Spinal Cord. Cell Transplant. 2015; 24 (7): 1283-1297. ( PubMed, DOI )

Taniyama Takashi, Hirai Takashi, Yoshii Toshitaka, Yamada Tsuyoshi, Yasuda Hiroaki, Saito Masanori, Inose Hiroyuki, Kato Tsuyoshi, Kawabata Shigenori, Okawa Atsushi. Modified K-line in magnetic resonance imaging predicts clinical outcome in patients with nonlordotic alignment after laminoplasty for cervical spondylotic myelopathy. Spine (Phila Pa 1976). 2014.10; 39 (21): E1261-E1268. ( PubMed, DOI )

Takashi Hirai, Mitsuhiro Enomoto, Hidetoshi Kaburagi, Shinichi Sotome, Kie Yoshida-Tanaka, Madoka Ukegawa, Hiroya Kuwahara, Mariko Yamamoto, Mio Tajiri, Haruka Miyata, Yukihiko Hirai, Makoto Tominaga, Kenichi Shinomiya, Hidehiro Mizusawa, Atsushi Okawa, Takanori Yokota. Intrathecal AAV serotype 9-mediated delivery of shRNA against TRPV1 attenuates thermal hyperalgesia in a mouse model of peripheral nerve injury. Mol Ther. 2014.02; 22 (2): 409-419. ( PubMed, DOI )

Takashi Hirai, Satoru Egawa, Hiroaki Onuma, Yu Matsukura, Shingo Morishita, Kentaro Yamada, Jun Hashimoto, Takuya Takahashi, Kenichiro Sakai, Toshitaka Yoshii.. Novel technique of anterior decompression based on Augmented Reality with computed tomography navigation system. 14th Annual Meeting CSRS-AP・7th Annual Meeting SSS 2024.03.22 SINGAPORE

Go Uesugi, Takashi Hirai, Toshitaka Yoshii, Jun Hashimoto, Masashi Yamazaki, Yoshiharu Kawaguchi. The Comparison between Cervical Ossification of the Posterior Longitudinal Ligament and Cervical Spondylotic Myelopathy Patients in Health-Related Quality of Life: a Multicenter Cross-Sectional Study. 51st Annual Meeting of the Cervical Spine Research Society (CSRS) 2023.12.01 Las Vegas

Jun Hashimoto, Shigenori Kawabata, Takashi Hirai, Yu Matsukura, Satrou Egawa, Toshitaka Yoshii. The Incidence and Alert Timing of Spontaneous Electromyogram in Surgery for Ossification of the Posterior Longitudinal Ligament. 51st Annual Meeting of the Cervical Spine Research Society (CSRS) 2023.12.01 Las Vegas

Yu Matsukura, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Satoru Egawa, Kentaro Yamada, Jun Hashimoto, Kurando Utagawa, Yuri Tamura, Go Uesugi , Atsushi Okawa . Investigation of Risk Factors of C5 Palsy After Anterior Cervical Spine Surgery. 51st Annual Meeting of the Cervical Spine Research Society (CSRS) 2023.11.30 Las Vegas

Motonori Hashimoto, Toshitaka Yoshii, Satoshi Egawa, Takashi Hirai. Imaging Features and Treatment of ossification of the posterior longitudinal ligament in the upper cervical spine. 51st Annual Meeting of the Cervical Spine Research Society (CSRS) 2023.11.29 Las Vegas

Motonori Hashimoto, Toshitaka Yoshii, Satoru egawa, Takashi Hirai, Kenichiro Sakai. Comparison of complication frequency after anterior cervical spine surgery - CSM vs OPLL. 51st Annual Meeting of the Cervical Spine Research Society (CSRS) 2023.11.29 Las Vegas

Yamada K, Yoshii T, Toba M, Egawa S, Matsukura Y, Hirai T, Inose H, Fushimi K, Okawa A. Risk factors for postoperative unexpected ambulatory status after spinal surgery for metastatic spinal tumor.. ISSLS 2023 SPINE WEEK 2023.05.04 Melbourne, Australia

Takashi Hirai, Toshitaka Yoshi, Kenichiro Sakai, Yoshiharu Kawaguchi. CSM case treated with salvage LAM after ACDF. ISSLS 2023 SPINE WEEK 2023.05.01 Melbourne, Australia

Takashi Hirai, Toshitaka Yoshi, Kenichiro Sakai, Yoshiharu Kawaguchi. Association between clinical symptoms and distribution of OPLL based on prospective nationwide study. ISSLS 2023 SPINE WEEK 2023.05.01 Melbourne, Australia

Takashi Hirai. Clinical and radiologic evidences in cervical compressive diseases. 13th Annual Meeting of CSRS-AP 2023.03.11 Yokohama

Kentaro Yamada, Toshitaka Yoshii, Mikayo Toba, Satoru Egawa, Yu Matsukura, Takashi Hirai, Hiroyuki Inose, Kiyohide Fushimi, Atsushi Okawa. Risk factors for postoperative unexpected ambulatory status after spinal surgery for metastatic spinal tumor. 13th Annual Meeting of CSRS-AP 2023.03.11 Yokohama

Yu Matsukura, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Satoru Egawa, Kentaro Yamada, Jun Hashimoto, Kurando Utagawa, Yuri Tamura, Go Uesugi , Atsushi Okawa. Investigation of risk factors of C5 palsy after anterior cervical spine surgery. 13th Annual Meeting of CSRS-AP 2023.03.11 Yokohama

Kaku Takumi, Oh Yoto, Sato Shingo, Koyanagi Hirotaka, Hirai Takashi, Yuasa Masato, Yoshii Toshitaka, Okawa Atsushi. Prevalence of precursory signs for atypical femoral fractures in cancer bone metastasis patients with bone-modifying agent use: A cross-sectional study). 94th Annual Meeting of the Japanese Orthopaedic Association 2021.05.20 Tokyo, JAPAN

Tsuyoshi Kato, Hiroyuki Inose, Takashi Hirai, Toshitaka Yoshii, Atushi Okawa. Development of a Guide for the Conservative Treatment for Acute OVF (osteoporotic vertebral fracture) according to a Prospective, Randomized, Multicenter Study by the Comparison of Hard and Soft-brace Treatments. The 23rd Seminar of the Study Group for Nerve and Spine（SGNS) 2021.02.20

Kaku Takumi, Oh Yoto, Sato Shingo, Koyanagi Hirotaka, Hirai Takashi, Yuasa Masato, Yoshii Toshitaka, Okawa Atsushi. Atypical femoral fractures in patients with metastatic bone disease: An alert report. 第93回 日本整形外科学会学術総会 2020.06.11

Hirotaka Koyanagi, Toshitaka Yoshii, Takashi Hirai, Shingo Sato, Atsushi Okawa. Experience of successful surgical treatment for lumbar giant cell tumour. ISOLS 2019 Meeting Athens 2019.09.11 Greece

Atsuyuki Kawabata, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Hiroaki Onuma, Shuta Ushio, Atsushi Okawa. Identification of Predictive Factors for Mechanical Complications after Adult Spinal Deformity Surgery; A MultiInsti-tutional Retrospective Study . ICORS 2019 2019.06.19 Montreal, Canada

Hiroaki Onuma, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Shuta Ushio, Atsuyuki Kawabata, Atsushi Okawa. Influence of Segmental Fusion on Postoperative Outcomes of Bone Grafted and Non-Bone Grafted Double-Door Laminoplasty, the Modified Kirita-Miyazaki Method, for Treatment of Cervical Spondylotic Myelopathy . ICORS 2019 2019.06.19 Montreal, Canada

Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Shuta Ushio, Hiroaki Onuma, Atsuyuki Kawabata, Atsushi Okawa. Surgical outcomes of thoracic arachnoid web: a case series . ICORS 2019 2019.06.19 Montreal, Canada

Shuta Ushio, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Shigenori Kawabata, Atsushi Okawa. Preoperative risk factor of adjacent segment degeneration after two-levels floating posterior fusion at L2-L4 or L3-L5 levels. 46th ISSLS 2019.06.03 Kyoto

Takashi Hirai, Toshitaka Yoshii, Tomoyuki Yokoyama, Atsushi Okawa. 3’ UTR alternative splicing of mRNAs may contribute to the mechanisms of peripheral neuropathy.. 46Th ISSLS 2019.06.03 Kyoto

Shuta Ushio, Toshitaka Yoshii, Takashi Hirai, Hiroyuki Inose, Masato Yuasa, Shigenori Kawabata, Atsushi Okawa. Investigation on factors related to outcomes in of surgical procedures for proximal type of cervical spondylotic amyotroph. 10th CSRS-AP　2019 2019.03.14 Yokohama

Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Shuta Ushio, Shigenori Kawabata, Atsushi Okawa, Kenichiro Sakai. Increase of fusion segment height may impact on postoperative dislodgement of strut after anterior cervical corpectomy with fusion for multilevel OPLL. 10th CSRS-AP 2019 2019.03.14 Yokohama

Hiroaki Onuma, Takashi Hirai, Toshitaka Yoshii, Hiroyuki Inose, Masato Yuasa, Atsuyuki Kawabata, Atsushi Okawa . Influence of Segmental Fusion on Postoperative Outcomes of Bone Grafted and Non-bone grafted Double-door Laminoplasty for Treatment of Cervical Spondylotic Myelopathy . 10th CSRS-AP　2019 2019.03.14 Yokohama

Toshitaka Yoshii, Shingo Morishita, Takashi Hirai, Kenichiro Sakai, Atsushi Okawa. Perioperative complications of anterior decompression with fusion vs posterior decompression with fusion for the treatment of cervical ossification of the posterior longitudinal ligament: Propensity score matching analysis using a national inpatient database . CSRS-AP　2019 2019.03.14 Yokohama

Takashi Hirai，Yoshiharu Kawaguchi, Toshitaka Yoshii，Narihito Nagoshi, Kazuhiro Takeuchi, Kanji Mori, Atsushi Okawa. Prevalence of ossified spinal lesions in patients with ossification of the posterior longitudinal ligament (OPLL)and sex differences in distribution of OPLL:A multicenter cross-sectional study. Orthopaedic Research Society 2019 Annual Meeting 2019.02.02 Austin,TX USA

Hiroyuki Inose, Masato Yuasa，Takashi Hirai，Toshitaka Yoshii，Shigenori Kawabata，Atsushi Okawa. The prevalence of sarcopenia among urbandwelling populations and its impact on the results of lumbar spinal surgery . 91st. Annual Meeting of the Japanese Orthopaedic Association 2018.05.24 Kobe, Japan

Takashi H, Yatendra M, Spigelman I.. Novel molecular target therapy for neuropathic pain.. 14th UCLA translational frontier reseach note 2018.03.26 Los Angeles, USA

Takashi Hirai, Toshitaka Yoshii, Akio Iwanami, Kazuhiro Takeuchi, Kanji Mori, Soraya Nishimura, Masaya Nakamura, Morio Matsumoto, Atsushi Okawa and Yoshiharu Kawaguchi.. Distribution of ossified lesion in patients with severe ossification posterior longitudinal ligament and prevalence of each segment– A Multicenter Study. 9th Annual Meeting of Cervical Spine Research Society Asia Pacific Section 2018.03.22 Delhi, India

Onuma H, Hirai T, Yoshii T, Inose H, Yuasa M, Kawabata A, Okawa A. Clinical and Radiologic Outcomes of Bone Grafted and Non-bone grafted Double-door Laminoplasty for Treatment of Cervical Spondylotic Myelopathy: Five-year Follow-up . 9th Annual Meeting of Cervical Spine Research Society Asia Pacific Section 2018.03.22 New Delhi, India

Ushio Shuta, Toshitaka Yoshii, Takashi Hirai, Hiroyuki Inose, Masato Yuasa, Shigenori Kawabata, Atsushi Okawa. Investigation on factors related to outcomes in of surgical procedures for cervical spondylotic amyotrophy. 9th Annual Meeting of Cervical Spine Research Society Asia Pacific Section 2018.03.22 New Delhi, India

Hirotaka Koyanagi, Toshitaka Yoshii, Takashi Hirai, Shingo Sato, Atsushi Okawa. Treatment of Lumbar Giant Cell Tumor. 108 Military Hospital and 24th Annual Meeting of The Spine Society of HCMC 2017.12.14 Ha Noi, Viet Nam

Toshitaka Yoshii, Tsuyoshi Yamada, Takashi Hirai, Kenichiro Sakai, Atsushi Okawa. Tandem Spinal Stenosis in Patients with Symptomatic Cervical Ossificatoin of the Posterior Longitudinal Ligament(OPLL). Cevical Spine Research Society 45th Annual Meeting 2017.11.30 Hollywood, Florida

Toshitaka Yoshii, Takashi Hirai, Tsuyoshi Yamada, Akio Iwanami, Kazuhiro Takeuchi, Kanji Mori, Atsushi Okawa, Yoshiharu Kawaguchi . Co-existence of ossification of the nuchal ligament is associated with spinal hyperostosis in patients with cervical ossification of the posterior longitudinal ligament - A Multicenter CT study-. ORS 2017.03.19 San Diego, USA

Satoru Egawa, Toshitaka Yoshii, Takashi Hirai, Tsuyoshi Yamada, Hiroyuki Inose, Shigenori Kawabata, Atsushi Okawa. Prevertebral Soft Tissue Swelling (PSTS) of anterior cervical surgery in Ossification of Posterior Longitudinal Ligament Is Higher Than Other Cervical Degenerative Disorders; A Radiographic Analysis.. CSRS-AP 2017 2017.03.09 koube

Takashi Hirai, Toshitaka Yoshii, Kenichiro Sakai, Satoru Egawa, Atsushi Okawa. Long-term results of a prospective study of anterior decompression with fusion and posterior decompression with laminoplasty for the treatment of cervical spondylotic myelopathy. CSRS-AP 2017 2017.03.09 koube

T Yoshii, T Hirai, K Sakai, A Okawa, K Shinomiya.. A Prospective Comparative Study in Skin Antiseptic Solutions for Posterior Spine Surgeries: Chlorhexidine-Gluconate Ethanol Vs. Povidone-Iodine . 2016 CSRS 2016.11.30 Toronto,Canada

T Hirai, T Yoshii, S Egawa, K Shinomiya, A Okawa.. Long-Term Results Of A Prospective Comparative Study Of Anterior Decompression With Fusion (Adf) And Posterior Decompression With Laminoplasty For The Treatment Of Cervical Spondylotic Myelopathy . 2016 CSRS 2016.11.30 Toronto,Canada

Hidetoshi Kaburagi, Takashi Hirai, Takanori Yokota, Atsushi Okawa, Mitsuhiro Enomoto. Role of voltage-gated sodium channels and calcium channel subunit alpha-2/delta-1 in the lumbar dorsal root ganglions of persistent peripheral neuropathic pain model mice . Society for Neuroscience 2016Annual Meeting 2016.11.12 San Diego,USA

Tsuyoshi Kato , Toshitaka Yoshii , Hiroyuki Inose , Takashi Hirai, Tsuyoshi Yamada, Atsushi Okawa. Pre-vertebroplasty transpedicular “vertebrography” assessment in delayed-union/pseudarthrosis associated with osteoporotic vertebral fracture . ISSLS 2016 Singapore 2016.05.17 Singapore

T. Hirai, T Yoshii, A Iwanami, K Takeuchi, K Mori, A Okawa, Y Kawaguchi.. Co-existence of Ossification of the Nuchal Ligament is Associated with Hyperostosis in the Whole Spine in Patients with Cervical Ossification of the Posterior Longitudinal Ligament . CSRS-AP2016 2016.04.21 seoul, Korea

T. Hirai, T Yoshii, A Iwanami, K Takeuchi, K Mori, T Yamada, S Nishimura, M Matsumoto, M Nakamura, A Okawa, Y Kawaguchi.. Incidence and Distribution of Ossified Lesions in the Whole Spine of Patients with Cervical Ossification of the Posterior Longitudinal Ligament – A Multicenter Study . CSRS-AP2016 2016.04.21 seoul, Korea

Toshitaka Yoshii, Takashi Hirai, Satoshi Sumiya, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa, Kenichi Shinomiya. Anterior Decompression with Fusion vs. Posterior Decompression with Fusion for Massive Cervical Ossification of Posterior Longitudinal Ligament with 50% Canal Occupying Ratio or More: Retrospective Multi-Center Study. 43rd CSRS 2015.12.03 San Diego

Hirai T., Mulpuri Y., Spigelman I. & Nishimura I.. Differential accumulation of Nav1.8 mRNA with de novo long 3’UTR in sensory axons after peripheral nerve injury. 45th annual meeting of the Society for Neuroscience 2015.10.17 Chicago

Tsuyoshi Kato, Toshitaka Yoshii, Hiroyuki Inose, Takashi Hirai, Tsuyoshi Yamada, Takashi Taniyama, Shigenori Kawabata, Atsushi Okawa. Long-term outcome of surgery for lumbar degenerative spondylolisthesis in a prospective randomized clinical trial. ISSLS 2015.06.08 San Francisco

Hirai T., Arai Y., Sakai K., Torigoe I., Maehara H., Tomori M., Soma M., Yoshii T., Sato H., & Okawa A. Two-year follow-up evaluation of alternative surgical treatments for cervical spondylotic myelopathy patients with cervical mis-alignment and/or large anterior impingement.. 6th annual meeting of the Cervical Spine Research Society– Asia Pacific Section 2015.03.26 Yokohama

Toshitaka Yoshii, Takashi Hirai, Hiroyuki Inose, Tsuyoshi Kato, Kenichiro Sakai, Shigenori Kawabata, Kenichi Shinomiya, Atsushi Okawa. A Prospective, Randomized Study Comparing Selective Laminectomy and Conventional Laminoplasty for Cervical Spondylotic Myelopathy: A Minimum of 2-year Follow-up . 6th CSRS Asia Pacific Section 2015.03.26 Yokohama