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Japanese

A New Classification of Lumbar Spinal Instability and the Results of Spinal Instrumentation for the Bony Radiological Instability Shigeo Sano 1 , Ichiroh Nagai 1 , Keisuke Ishii 1 , Hiroyasu Ishii 1 , Kanzoh Yokoo 1 , Keita Komiya 1 1Department of Orthopaedic Surgery, Sanraku Hospital Keyword: lumbar spinal instability , 腰椎不安定症 , classification , definition , diagnosis , 分類 , 定義 , 診断 , spinal instrumentation , 脊椎インストゥルメンテーション pp.469-477
Published Date 2003/4/1
DOI https://doi.org/10.11477/mf.1408100683
  • Abstract
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 We classified the instability lumbar spine into bony radiological instability and sub-instability based on the dynamic plain X-ray findings,neuroradiological instability and sub-instability based on the dynamic myelography findings, and clinical instability and sub-instability based on the clinical manifestations. The definition and diagnosis of instability was made in this classification. The conceptual confusion existed in instability was resolved with this new classification, by using each instability independently.

 The results of instrumentation surgery in 78 cases of bony radiological instability were assessed. The JOA score improved from 11 points preoperatively to 23 points postoperatively, and the improvement rate was 66%. The improvement in lumbar lordosis and percent slip was statistically better in the group treated by PLIF and PLF than in the group treated by PLF alone.


Copyright © 2003, 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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