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Year : 2012  |  Volume : 1  |  Issue : 1  |  Page : 46

Changes in electrophysiological parameters after open carpal tunnel release

1 Department of Orthopedics, Medical University of Isfahan Kashani Hospital, Isfahan, Iran
2 Physical Medicine and Rehabilitation at Isfahan University of Medical and Health Sciences, Isfahan, Iran
3 General Physician Medical University of Isfahan, Isfahan, Iran

Correspondence Address:
Mohammad A Tahririan
Department of Orthopedics, Kashani Hospital, Medical University of Isfahan
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2277-9175.100151

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Background: Carpal tunnel syndrome (CTS) is the most frequent compressive mononeuropathy, affecting mostly females. Few studies have been performed to assess the electrophysiological parameters before and after carpal tunnel release. The purpose of our study was to evaluate these changes postoperatively and in the course of a 9-month period after operation in comparison with the preoperative values. Materials and Methods: A case-series study was carried out and included 17 cases of moderate or severe electrophysiologically confirmed CTS, who underwent open carpal tunnel release (CTR) from December 2010 to May 2011. Severity grade was assigned following American Association of the Electrodiagnostic Medicine criteria of CTS. Distal motor and sensory latencies and sensory nerve conduction velocity of the median nerve across the carpal tunnel were evaluated and compared before, at 6, and 9 months after surgery. Results: From the 17 evaluated hand with moderate, moderate to severe and severe CTS, severity improvement was reported in 82.3% 6 months and in 88.2% 9 months after surgery, but only 47% had satisfied or completely satisfied opinion about the results. Others, though still complaining of serious symptoms, had improved or normal NCS. Discussion: Electrophysiological investigations outlined severity improvement after CTR. In the current study, the electrophysiological studies were not meaningful in determining outcome.

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