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 )

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 )

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 )

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 )

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 )

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 )

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 )

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 )

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 )

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 Surgery and Related Research. 2022.10; Article ID: 2022-0168.

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 )

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 )

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 )

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 )

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 )

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; 1-8. ( 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 )

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 )

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 )

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 )

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 )

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 )

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 )

Toshitaka Yoshii, Satroru Egawa, Hirotaka Chikuda, Norimitsu Wakao, Takeo Furuya, Tsukasa Kanchiku, Narihito Nagoshi, Yasushi Fujiwara, Masahiro Yoshida, Toshihiko Taguchi, Masahiko Watanabe. Response to 'Laminectomy is preferred for cervical myelopathy, but laminoplasty may yield better outcomes, including reduced C5 nerve palsy'. J Orthop Sci. 2021.03; 26 (2): 320-321. ( PubMed, DOI )

Toshitaka Yoshii, Satoru Egawa, Hirotaka Chikuda, Norimitsu Wakao, Takeo Furuya, Tsukasa Kanchiku, Narihito Nagoshi, Yasushi Fujiwara, Masahiro Yoshida, Toshihiko Taguchi, Masahiko Watanabe. A systematic review and meta-analysis comparing anterior decompression with fusion and posterior laminoplasty for cervical spondylotic myelopathy. J Orthop Sci. 2021.01; 26 (1): 116-122. ( PubMed, DOI )

Toshitaka Yoshii, Satroru Egawa, Hirotaka Chikuda, Norimitsu Wakao, Takeo Furuya, Tsukasa Kanchiku, Narihito Nagoshi, Yasushi Fujiwara, Masahiro Yoshida, Toshihiko Taguchi, Masahiko Watanabe. Comparison of anterior decompression with fusion and posterior decompression with fusion for cervical spondylotic myelopathy-A systematic review and meta-analysis. J Orthop Sci. 2020.11; 25 (6): 938-945. ( 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 )

Satoru Egawa, Keigo Hirai, Rempei Matsumoto, Toshitaka Yoshii, Masato Yuasa, Atsushi Okawa, Ken Sugo, Shinichi Sotome. Efficacy of Antibiotic-Loaded Hydroxyapatite/Collagen Composites Is Dependent on Adsorbability for Treating Staphylococcus aureus Osteomyelitis in Rats. J Orthop Res. 2020.04; 38 (4): 843-851. ( 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 )

Kei Ando, Shiro Imagama, Takashi Kaito, Shota Takenaka, Kenichiro Sakai, Satoru Egawa, Shigeo Shindo, Kota Watanabe, Nobuyuki Fujita, Morio Matsumoto, Hideaki Nakashima, Kanichiro Wada, Atsushi Kimura, Katsushi Takeshita, Satoshi Kato, Hideki Murakami, Kazuhiro Takeuchi, Masahiko Takahata, Masao Koda, Masashi Yamazaki, Masahiko Watanabe, Shunsuke Fujibayashi, Takeo Furuya, Yoshiharu Kawaguchi, Yukihiro Matsuyama, Toshitaka Yoshii, Atsushi Okawa. Outcomes of Surgery for Thoracic Myelopathy Owing to Thoracic Ossification of The Ligamentum Flavum in a Nationwide Multicenter Prospectively Collected Study in 223 Patients: Is Instrumented Fusion Necessary? Spine（Phila Pa1976）. 2020.02; 45 (3): E170-E178. ( 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 )

Masato Yuasa, Masanori Saito, Deke M Blum, Alexander A Hysong, Satoru Egawa, Sasidhar Uppuganti, Toshitaka Yoshii, Atsushi Okawa, Herbert S Schwartz, Stephanie N Moore-Lotridge, Jeffry S Nyman, Jonathan G Schoenecker. The Size of Intramedullary Fixation Affects Endochondral-Mediated Angiogenesis During Fracture Repair. J Orthop Trauma. 2019.10; 33 (10): e385-e393. ( 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 )

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.

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 )

Wei Xuetao, Egawa Satoru, Matsumoto Renpei, Yasuda Hiroaki, Hirai Keigo, Yoshii Toshitaka, Okawa Atsushi, Nakajima Takehiko, Sotome Shinichi. Augmentation of fracture healing by hydroxyapatite/collagen paste and bone morphogenetic protein-2 evaluated using a rat femur osteotomy model. J Orthop Res. 2018.01; 36 (1): 129-137. ( 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 )

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 )

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, 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

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

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

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

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

Kanji Mori, Toshitaka Yoshii, Satoru Egawa, Masao Koda, Takeo Furuya, Katsushi Takeshita, Morio Matsumoto, Shiro Imagama , Atsushi Okawa, Masashi Yamazaki. Impact of obesity on cervical ossification of the posterior longitudinal ligament: a nationwide prospective study. 13th Annual Meeting of CSRS-AP 2023.03.10 Yokohama

Satoru Egawa, Keigo Hirai, Rempei Matsumoto,Toshitaka Yoshii, Atsushi Okawa, Shinichi Sotome. Therapeutic Effect of Antibiotic-loaded Hydroxyapatite Collagen(HAp/Col)Composite on Acute, Bone-Destructive Osteomyelitis in Rats . Orthopaedic Research Society 2019 Annual Meeting 2019.02.02 Austin, TX, USA

Rempei Matsumoto, Satoru Egawa,Toshitaka Yoshii,Keigo Hirai,Atsushi Okawa,Shinichi Sotome. Local control experiment by paclitaxel impregnated HAp/Col for the metastasis to breast cancer bone model rat . Orthopaedic Research Society 2018.03.10 New Orleans, USA

Satoru Egawa, Wei Xue Tao, Toshitaka Yoshii, Hiroaki Yasuda, Rempei Matsumoto, Atsushi Okawa, Shinichi Sotome. Repair of Femoral Bone Defects in Rats Using Hydroxyapatite/Collagen (HAp/Col) with BMP-2. 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 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