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Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association|June 7, 2021
The characteristics of the young patients with cervical ossification of the posterior longitudinal ligament of the spine: A multicenter cross-sectional studyKanji Mori, Toshitaka Yoshii, Takashi Hirai, et al.Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association|September 24, 2018
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 studyToshitaka Yoshii, Takashi Hirai, Akio Iwanami, et al.BMC Musculoskeletal Disorders|April 7, 2018
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)Takashi Hirai, Toshitaka Yoshii, Narihito Nagoshi, et al.Journal of Clinical Medicine|December 18, 2020
Associations between Clinical Symptoms and Degree of Ossification in Patients with Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Multi-Institutional Cross-Sectional StudyTakashi Hirai, Toshitaka Yoshii, Shuta Ushio, et al.Clinical Spine Surgery|March 26, 2021
Severity of Myelopathy is Closely Associated With Advanced Age and Signal Intensity Change in Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Nationwide InvestigationTakashi Hirai, Toshitaka Yoshii, Satoru Egawa, et al.Clinical Spine Surgery|August 17, 2018
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 StudySoraya Nishimura, Narihito Nagoshi, Akio Iwanami, et al.Clinical Spine Surgery|August 4, 2021
Perioperative Complications in Posterior Surgeries for Cervical Ossification of the Posterior Longitudinal Ligament: A Prospective Nationwide InvestigationToshitaka Yoshii, Satoru Egawa, Kenichiro Sakai, et al.Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association|November 2, 2019
The characteristics of the patients with radiologically severe cervical ossification of the posterior longitudinal ligament of the spine: A CT-based multicenter cross-sectional studyKanji Mori, Toshitaka Yoshii, Takashi Hirai, et al.Journal of Clinical Medicine|September 28, 2021
Associations between Clinical Findings and Severity of Diffuse Idiopathic Skeletal Hyperostosis in Patients with Ossification of the Posterior Longitudinal LigamentTakashi Hirai, Soraya Nishimura, Toshitaka Yoshii, et al.Journal of Clinical Medicine|July 9, 2022
Clinical Characteristics of Patients with Ossification of the Posterior Longitudinal Ligament and a High OP Index: A Multicenter Cross-Sectional Study (JOSL Study)Takashi Hirai, Toshitaka Yoshii, Jun Hashimoto, et al.Pageof 18