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Japanese

Outcomes of Conservative Treatment for Cervical Myelopathy Caused by Soft Disc Herniation Morio Matsumoto 1 , Kazuhiro Chiba 2 , Ken Ishii 2 , Yuto Ogawa 2 , Hironari Takaishi 2 , Masaya Nakamura 2 , Yoshiaki Toyama 2 1Department of Musculoskeletal Reconstruction and Regeneration Surgery, Keio University 2Department of Orthopaedic Surgery, Keio University Keyword: cervical soft disc herniation , 頚椎椎間板ヘルニア , regression , 縮小 , conservative treatment , 保存療法 , cervical myelopathy , 頚髄症 pp.333-340
Published Date 2006/4/1
DOI https://doi.org/10.11477/mf.1408100283
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 The purposes of this study are to delineate the clinical course and MRI findings of patients with disc hernias which regressed spontaneously and to determine who is eligible for conservative treatment. Twenty-three patients with mild cervical myelopathy (initial JOA scores>10) caused by soft disc herniation were treated conservatively for more than two years (13males, 10 females, mean age;50, mean follow-up 3.6 years). The investigated items included JOA scores and MRI findings (morphology of disc herniation, ). Morphology of disc herniation was classified into focal type (herniated mass persisting at the intervertebral level) and diffuse type (herniated mass migrating rostrally or caudally) in the sagittal plane and median type or paramedian type in the axial plane. The mean JOA scores were 13.4±1.5 before treatment, and 16.0±1.0 at follow-up. Regression of herniation was observed in 14 patients (Group A), while no regression was seen in 9 patients (Group B). The JOA scores were 13.7±1.5 (Group A) and 14.0±1.6 (Group B) before treatment, and 16.3±1.6 and 15.7±1.2 at follow-up, respectively. On sagittal MR images, diffuse-type herniation was observed in 9 patients (64%) and focal-type in 5 (36%) in Group A, and 3 (33%) and 6 (67%) in Group B, respectively. On axial images, median-type herniation was observed in 10 patients (71%), and paramedian-type in 4 (29%) in Group A, and 6 (67%) and 3 (33%) in Group B, respectively. Spontaneous soft disc regression in patients with cervical myelopathy was observed in more than half of those treated conservatively for longer than 2 years. Conservative treatment can be recommended for patients with mild cervical myelopathy, especially when caused by median-and/or diffuse-type disc hernia, although close observation is mandatory.


Copyright © 2006, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1286 印刷版ISSN 0557-0433 医学書院

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