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Investigation of the Correlation between Electrophysiological Improvement and Clinical Recovery after Carpal Tunnel Release Takako KANATANI 1 , Hiroyuki FUJIOKA 2 , Masahiro KUROSAKA 3 , Masatoshi SUMI 1 , Kyoko YAMASAKI 1 1Department of Orthopaedic Surgery, Kobe Rosai Hospital 2Department of Orthopaedic Surgery, Hyogo Medical School of Medicine 3Department of Orthopaedic Surgery, Kobe University School of Medicine Keyword: 手根管症候群 , carpal tunnel syndrome , 電気生理学重症度分類 , electrophysiological severity grading system , 臨床的改善 , clinical improvement pp.637-641
Published Date 2011/7/25
DOI https://doi.org/10.11477/mf.1408102042
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 Electrophysiological recovery after carpal tunnel release was examined using the following grading system:stage 1, normal distal motor latency (DML) and sensory conduction velocity (SCV);2, DML of ≥4.5 ms and normal SCV;3, DML of ≥4.5 ms and SCV of <40.0 ms;4, DML of ≥4.5 ms and non-measurable SCV;5, non-measurable DML and SCV. In addition, the correlation of electrophysiological severity grades with clinical symptoms was investigated before and after the operation. Before the operation, numbness and sensory deficit were detected in all stages 2-5 cases, whereas pain was the most in stage 3 cases. In all stage 5 cases, thenar atrophy was observed and was found to be statistically significant. Most of the clinical symptoms improved in parallel with electrophysiological recovery at 1 year after the operation. However, the number of stage 5 cases in which there was an improvement to the electrophysiological normal stage was significantly lower than that of stage 2-4 cases with a similar outcome.


Copyright © 2011, 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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