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“Y sign” as an anatomical finding associated with severe hypotension in the prone position: illustrative cases
Tomonori Kawaharada, Kenichiro Yahata, Ko Hashimoto, Kohei Takahashi, Ryo Sugawara, Takahiro Onoki, Keisuke Ishikawa, Junya Kusakabe, Toshimi Aizawa
Journal of Neurosurgery: Case Lessons 12 (2) 2026
Publisher:
American Association of Neurological Surgeons
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More than three-year radiological follow-up by computed tomography for spinal osteoid osteoma: report of two cases
Tomonori Kawaharada, Takahiro Onoki, Ko Hashimoto, Kohei Takahashi, Kenichiro Yahata, Junya Kusakabe, Toshimi Aizawa
JOS Case Reports 2026
Publisher:
Elsevier
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Clinical Features and Surgical Management for Spinal Plexiform Schwannomas: Three Case Series and Literature Review
Taishi Murakami, Takahiro Onoki, Ko Hashimoto, Yoshito Onoda, Kohei Takahashi, Kenichiro Yahata, Keisuke Ishikawa, Yuki Sato, Junya Kusakabe, Tomonori Kawaharada, et al.
The Tohoku Journal of Experimental Medicine 2026
Publisher:
Tohoku University Medical Press
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Spinopelvic–Hip Harmony [PFA-(PI- LL)] as a Radiographic Indicator of Hip Extension Compensatory Reserve in Kyphotic Adult Spinal Deformity: A Multicenter Study
Keisuke Ishikawa, Kohei Takahashi, Ko Hashimoto, Kenichiro Yahata, Kazuyoshi Baba, Takahiro Onoki, Ryo Fujita, Junya Kusakabe, Tomonori Kawaharada, Michiyoshi Sato, et al.
Global Spine Journal 21925682261438473 2026
Publisher:
SAGE Publications Sage CA: Los Angeles, CA
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β2-microglobulin amyloid deposition and the RAGE-related inflammation pathway in ligamentum flavum thickening among patients undergoing hemodialysis: a comparative cross-sectional study from Japan
Keisuke Ishikawa, Yutaka Yabe, Yoshito Onoda, Takahiro Onoki, Kohei Takahashi, Ko Hashimoto, Toshimi Aizawa
Asian Spine Journal 2026
Publisher:
Korean Society of Spine Surgery
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Letter to the editor concerning “Association between intraoperative hypotension and motor evoked potential change in ossification of posterior longitudinal ligament and/or ossification of ligamentum flavum surgery” by Liu et al.(2025
Junya Kusakabe, Kohei Takahashi, Ko Hashimoto, Kenichiro Yahata, Takahiro Onoki, Tomonori Kawaharada, Toshimi Aizawa
North American Spine Society Journal (NASSJ) 2026
Publisher:
Elsevier
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Comparisons of Minimum 2-Year Outcomes Between Posterior Decompressive Fusion Surgeries With and Without Anterior Decompression Through a Posterior Approach for Thoracic Ossification of the Posterior Longitudinal Ligaments: A Retrospective Multicenter Study
Yohei Shibuya, Masayuki Ohashi, Ko Hashimoto, Kohei Takahashi, Takahiro Onoki, Haruo Kanno, Tomoto Suzuki, Takeru Akabane, Hiroshi Ozawa, Toshimi Aizawa, et al.
Spine Open 2 (1) e0045 2026
Publisher:
LWW
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O-Arm Navigated En Bloc Resection of a Paraspinal Malignant Peripheral Nerve Sheath Tumor Involving the Thoracic Spine: A Case Report
Keisuke Ishikawa, Takahiro Onoki, Ko Hashimoto, Kohei Takahashi, Ken-ichiro Yahata, Junya Kusakabe, Tomonori Kawaharada, Haruo Kanno, Mika Watanabe, Shin Hitachi, et al.
Spine Surgery and Related Research 10 (2) 311-314 2026
Publisher:
The Japanese Society for Spine Surgery and Related Research
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A predictive formula for sagittal vertical axis in Japanese women using spinopelvic-hip mismatch
Kohei Takahashi, Ryo Fujita, Ko Hashimoto, Yu Mori, Kenichiro Yahata, Kazuyoshi Baba, Takahiro Onoki, Keisuke Ishikawa, Junya Kusakabe, Michiyoshi Sato, et al.
Spine Surgery and Related Research 10 (2) 220-227 2026
Publisher:
The Japanese Society for Spine Surgery and Related Research
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Response to the letter to the editor: Proposal of a new indicator of hip compensation for spinopelvic–hip mismatch: a retrospective study in Japan
Ryo Fujita, Kohei Takahashi, Toshimi Aizawa
Asian Spine Journal 19 (5) 867-868 2025
Publisher:
Korean Society of Spine Surgery
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Intramedullary stress analysis as a diagnostic tool for identifying symptomatic spinal levels in thoracic OPLL and OLF
J Kusakabe, K Takahashi, N Sakamoto, K Hashimoto, T Onoki, K Yahata, T Kawaharada, T Aizawa
Brain and Spine 5 104589 2025
Publisher:
Elsevier
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Enhancing safety in anterior sliding decompression osteotomy: concerns and technical considerations
Junya Kusakabe, Ko Hashimoto, Kohei Takahashi, Kenichiro Yahata, Takahiro Onoki, Toshimi Aizawa
Journal of Neurosurgery: Spine 44 (1) 175-178 2025
Publisher:
American Association of Neurological Surgeons
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Spontaneous Dural Tear Caused by Grade-I Isthmus Spondylolisthesis: A Case Report
Takahiro Onoki, Kohei Takahashi, Ko Hashimoto, Yoshito Onoda, Kenichiro Yahata, Ryo Fujita, Keisuke Ishikawa, Junya Kusakabe, Mishio Chiba, Toshimi Aizawa
JBJS Case Connector 15 (3) e24 2025
Publisher:
LWW
-
Proposal of a new indicator of hip compensation for spinopelvic–hip mismatch: a retrospective study in Japan
Ryo Fujita, Kohei Takahashi, Ko Hashimoto, Kazuyoshi Baba, Kenichiro Yahata, Takahiro Onoki, Takashi Aki, Keisuke Ishikawa, Toshimi Aizawa
Asian Spine Journal 19 (6) 967 2025
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Skip metastasis of intradural Ewing’s sarcoma in the lumbar spine: illustrative case
Junya Kusakabe, Ko Hashimoto, Takahiro Onoki, Kohei Takahashi, Kenichiro Yahata, Tomonori Kawaharada, Toshimi Aizawa
Journal of Neurosurgery: Case Lessons 10 (5) 2025
Publisher:
American Association of Neurological Surgeons
-
Three-dimensional motion analysis of upright bipedal walking android model
Kouji Sanaka, Yusuke Sekiguchi, Daisuke Kurosawa, Seiichi Sugimura, Ko Hashimoto, Kohei Takahashi, Satoru Ebihara, Eiichi Murakami, Toshimi Aizawa
Clinical Biomechanics 106620 2025
Publisher:
Elsevier
-
High-accuracy spinal alignment monitoring using the head angle and visual distance in computer users
Ko Hashimoto, Yusuke Sekiguchi, Kaho Matsuda, Masataka Hori, Yutaka Mizuno, Ryosuke Shibuya, Kohei Takahashi, Takahiro Onoki, Kenichiro Yahata, Shin-Ichi Izumi, et al.
Plos one 20 (6) e0326431 2025
Publisher:
Public Library of Science San Francisco, CA USA
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Resection of C2 chordoma after failed ion-beam radiotherapy: illustrative case
Takahiro Onoki, Ko Hashimoto, Kohei Takahashi, Ken-ichiro Yahata, Junya Kusakabe, Tomonori Kawaharada, Haruo Kanno, Toshimi Aizawa
Journal of Neurosurgery: Case Lessons 10 (4) 2025
Publisher:
American Association of Neurological Surgeons
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Postoperative paralysis following the surgery for thoracic ossification of the posterior longitudinal ligament: perioperative and intraoperative management strategies. Illustrative case
Kohei Takahashi, Ko Hashimoto, Kenichiro Yahata, Takahiro Onoki, Junya Kusakabe, Tomonori Kawaharada, Toshimi Aizawa
Journal of Neurosurgery: Case Lessons 9 (20) 2025
Publisher:
American Association of Neurological Surgeons
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A novel, easy-to-use scoring system for the diagnosis of extraforaminal stenosis of lumbosacral transition using X-ray and CT scan
Kohei Takahashi, Myo Min Latt, Takumi Tsubakino, Manabu Suzuki, Takeshi Nakamura, Takeshi Hoshikawa, Tomowaki Nakagawa, Ko Hashimoto, Takahiro Onoki, Toshimi Aizawa, et al.
Journal of Orthopaedic Science 2025
Publisher:
Elsevier
-
The dural deviation ratio: a novel indicator for preoperative differentiation of intradural extension in spinal dumbbell schwannomas using Axial T2-weighted MRI
Rei Kimura, Ko Hashimoto, Kohei Takahashi, Takahiro Onoki, Kenichiro Yahata, Toshimi Aizawa
The Spine Journal 25 (8) 1630-1634 2025
Publisher:
Elsevier
-
Efficacy of octacalcium phosphate/gelatin (OCP/Gel) composite implantation for miniature swine lumbar interbody fusion
Yu Mori, Ryo Hamai, Ryuichi Kanabuchi, Takahiro Onoki, Kohei Takahashi, Ko Hashimoto, Toshimi Aizawa, Osamu Suzuki
The Tohoku Journal of Experimental Medicine 266 (2) 135-144 2025
Publisher:
Tohoku University Medical Press
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Harmony between spinopelvic mismatch and sagittal hip alignment contributes to upright standing in females: a cross-sectional study
Kazuyoshi Baba, Kohei Takahashi, Ko Hashimoto, Takahiro Onoki, Takashi Aki, Ryo Fujita, Keisuke Ishikawa, Toshimi Aizawa
Journal of Spine Surgery 10 (2) 244 2024
-
Validating the Definition of Lumbar Instability—A Cross-Sectional Study with 420 Healthy Volunteers
Manabu Suzuki, Yasuhisa Tanaka, Ko Hashimoto, Takumi Tsubakino, Takeshi Hoshikawa, Kohei Takahashi, Myo Min Latt, Toshimi Aizawa
Journal of Clinical Medicine 13 (20) 6116 2024
Publisher:
MDPI
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Lumbar radiculopathy due to Bertolotti's syndrome: Alternative method to reveal the “hidden zone”—A report of two cases and review of literature
Shigeaki Kojo, Kohei Takahashi, Takumi Tsubakino, Ko Hashimoto, Toshimi Aizawa, Yasuhisa Tanaka
Journal of Orthopaedic Science 29 (1) 366-369 2024
Publisher:
Elsevier
-
Post-laminectomy cervical flexion myelopathy and its possible pathomechanism: A case report
Kohei Takahashi, Shinji Ogawa, Shuji Isefuku, Ko Hashimoto, Toshimi Aizawa
Journal of Orthopaedic Science 29 (1) 394-398 2024
Publisher:
Elsevier
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胸椎後縦靱帯骨化症に対する後方進入前方除圧術後の麻痺増悪に関する検討
高橋 康平, 橋本功, 八幡健一郎, 大野木孝嘉, 菅野晴夫, 小澤浩司, 相澤俊峰
Journal of Spine Research 15 (5) 753-760 2024
Publisher:
一般社団法人 日本脊椎脊髄病学会
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Are T1-weighted three-dimensional magnetic resonance images inferior to T2-weighted images for diagnosing lumbar foraminal stenosis in the fifth lumbar nerve root? A prospective, comparative study in identical patients
Ko Hashimoto, Yasuhisa Tanaka, Takumi Tsubakino, Takeshi Hoshikawa, Chikashi Kawahara, Tomowaki Nakagawa, Satoshi Tateda, Kohei Takahashi, Manabu Suzuki, Takahiro Onoki, et al.
Spine surgery and related research 7 (5) 436-442 2023
Publisher:
The Japanese Society for Spine Surgery and Related Research
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Anterior shift of the ventral dura mater: a novel concept of the posterior surgery for ossification of the posterior longitudinal ligament in thoracic spine
Kohei Takahashi, Ko Hashimoto, Takahiro Onoki, Haruo Kanno, Hiroshi Ozawa, Toshimi Aizawa
Frontiers in Surgery 10 1120069 2023
Publisher:
Frontiers Media SA
-
Sacral giant chronic expanding hematoma in a patient with Marfan syndrome: A case report
Naoto Shibasaki, Ko Hashimoto, Takahiro Onoki, Kohei Takahashi, Takuya Numasawa, Toshimi Aizawa
JOS Case Reports 2 (3) 57-60 2023
Publisher:
Elsevier
-
Radical decompression without fusion for L5 radiculopathy due to foraminal stenosis
Kohei Takahashi, Ajay Yadav, Takumi Tsubakino, Takeshi Hoshikawa, Tomowaki Nakagawa, Ko Hashimoto, Manabu Suzuki, Toshimi Aizawa, Yasuhisa Tanaka
Journal of Spine Surgery 9 (3) 278 2023
-
Primary malignant lymphoma of the cauda equina diagnosed after decompression for lumbar spinal stenosis: a case report
Manabu Suzuki, Kohei Takahashi, Mika Watanabe, Ko Hashimoto, Takahiro Onoki, Kyoichi Handa, Toshimi Aizawa
The Tohoku Journal of Experimental Medicine 260 (4) 341-346 2023
Publisher:
Tohoku University Medical Press
-
Reliability of conventional two-dimensional magnetic resonance imaging for diagnosing extraforaminal stenosis in lumbosacral transition
Kohei Takahashi, Myo Min Latt, Takumi Tsubakino, Manabu Suzuki, Takeshi Nakamura, Takeshi Hoshikawa, Tomowaki Nakagawa, Ko Hashimoto, Takahiro Onoki, Toshimi Aizawa, et al.
Spine surgery and related research 7 (6) 526-532 2023
Publisher:
The Japanese Society for Spine Surgery and Related Research
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THREE-COLUMN OSTEOTOMY WITH COMBINATION OF COMPRESSION HOOK AND PEDICLE SCREW FIXATION FOR ADULT SPINAL DEFORMITY IN PATIENTS WITH PARKINSON’S DISEASE
Haruo Kanno, Ko Hashimoto, Kohei Takahashi, Kyoichi Handa, Toshimi Aizawa, Hiroshi Ozawa
Journal of Musculoskeletal Research 26 (02) 2340005 2023
Publisher:
World Scientific Publishing Company
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Retrospective comparison of the surgical results for patients with thoracic myelopathy caused by ossification of the posterior longitudinal ligament: posterior decompression with instrumented spinal fusion versus modified anterior decompression through a posterior approach
Toshimi Aizawa, Ko Hashimoto, Haruo Kanno, Kyoichi Handa, Kohei Takahashi, Takahiro Onoki, Eiji Itoi, Hiroshi Ozawa
Journal of Orthopaedic Science 27 (2) 323-329 2022
Publisher:
Elsevier
-
Destructive spondyloarthropathy due to congenital insensitivity to pain with anhidrosis: a case report of long-term follow-up
Ko Hashimoto, Kohei Takahashi, Takahiro Onoki, Haruo Kanno, Naoki Morozumi, Shin Yamazaki, Ken-ichiro Yahata, Toshimi Aizawa
The Tohoku Journal of Experimental Medicine 258 (2) 91-95 2022
Publisher:
Tohoku University Medical Press
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A modified minimally invasive surgery for thoracic pyogenic spondylitis: Percutaneous pedicle screw fixation in combination with a vertebral debridement in a separate posterolateral approach—A case report
Yuki Sato, Ko Hashimoto, Michiharu Matsuda, Takahiro Onoki, Masayuki Kamimura, Kohei Takahashi, Yoshito Onoda, Daisuke Chiba, Yu Mori, Haruo Kanno, et al.
Clinical Case Reports 10 (12) e6710 2022
Publisher:
Wiley Online Library
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The psoas major muscle is essential for bipedal walking–An analysis using a novel upright bipedal-walking android model
Kouji Sanaka, Ko Hashimoto, Daisuke Kurosawa, Eiichi Murakami, Hiroshi Ozawa, Kohei Takahashi, Takahiro Onoki, Toshimi Aizawa
Gait & Posture 94 15-18 2022
Publisher:
Elsevier
-
Foraminal stenosis at L5–S1 as an overlooked pathology of bilateral radiculopathy: a case series
Kohei Takahashi, Ajay Kumar Yadav, Ko Hashimoto, Takumi Tsubakino, Toshimi Aizawa, Yasuhisa Tanaka
Journal of Orthopaedic Case Reports 12 (6) 13 2022
-
Adolescent-onset Local Kyphosis with Anterior Column Hypoplasia and Subluxation of the Facet Joints of the Lumbar Spine: A Case Report
Kohei Takahashi, Ko Hashimoto, Takahiro Onoki, Kyoichi Handa, Haruo Kanno, Toshimi Aizawa
Journal of Orthopaedic Case Reports 12 (1) 50 2022
-
Imaging diagnosis of lumbar foraminal stenosis in the fifth lumbar nerve root: reliability and reproducibility of T1-weighted three-dimensional lumbar MRI
Ko Hashimoto, Yasuhisa Tanaka, Takumi Tsubakino, Takeshi Hoshikawa, Tomowaki Nakagawa, Takashi Inawashiro, Kohei Takahashi, Masaru Suda, Toshimi Aizawa
Journal of Spine Surgery 7 (4) 502 2021
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腰椎椎間関節囊腫の治療成績―腰椎開窓術による囊腫切除―
日下部隆, 相澤俊峰, 笠間史夫, 古泉豊, 中村豪, 高橋 康平
Journal of Spine Research 11 (9) 1107-1113 2020
Publisher:
一般社団法人 日本脊椎脊髄病学会
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脊髄障害と誤認された C8 神経根症の 1 例
鈴木学, 田中靖久, 椿野巧, 星川健, 高橋 康平
東日本整形災害外科学会雑誌 30 (2) 220-224 2018
Publisher:
東日本整形災害外科学会
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Influence of intramedullary stress on cervical spondylotic myelopathy
K Takahashi, H Ozawa, N Sakamoto, Y Minegishi, M Sato, E Itoi
Spinal Cord 51 (10) 761-764 2013
Publisher:
Nature Publishing Group
-
初回 TKA 後の内反動揺性のため constrained TKA で再置換した 1 例
板谷信行, 梅原寿太郎, 佐藤心一, 後藤伸一, 高橋 康平, 日下仁
東北膝関節研究会会誌 22 43-46 2013
Publisher:
東北膝関節研究会
-
強直性脊椎骨増殖症に発生した頚椎骨折の 2 例
小川真司, 伊勢福修司, 高橋 康平
Journal of spine research: official journal of the Japanese Society for Spine Surgery and Related Research/Journal of spine research 編集委員会 編 3 (1) 46-49 2012
Publisher:
東京: 日本脊椎脊髄病学会
-
臨床 腰部脊柱管狭窄症の膀胱機能評価–JOA スコアと国際前立腺症状スコア, 尿流動態検査との比較
高橋 康平, 神尾一彦, 相澤俊峰
整形・災害外科= Orthopaedic surgery and traumatology 53 (2) 179-185 2010
Publisher:
東京: 金原出版
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臨床 中下位頚椎損傷に対する後方ワイヤーないしケーブル固定
小川真司, 高橋 康平, 小野田祥人
整形・災害外科= Orthopaedic surgery and traumatology 53 (7) 857-863 2010
Publisher:
東京: 金原出版
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大腿骨転子部骨折に対する Hansson twin hook system による骨接合術の経験
高橋 康平, 神尾一彦, 田代茂義, 伊勢福修司
骨折 31 (2) 296-298 2009
-
骨粗鬆症性椎体圧潰に対する前方除圧固定術
小川真司, 岩井和夫, 安藤晃, 小野田祥人, 高橋 康平
東北整形災害外科学会雑誌= Tohoku journal of orthopaedics and traumatology 53 (1) 1-6 2009
-
脛骨骨髄炎後の mal-alignment に対して TKA を施行した 2 例
高橋 康平, 吉田秀一, 岩井和夫
東北整形災害外科学会雑誌= Tohoku journal of orthopaedics and traumatology 52 (1) 56-60 2008
