Annals of Clinical Neurophysiology

The Korean Society of Clinical Neurophysiology (대한임상신경생리학회)
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Clinical and Electrophysiological Changes after Open Carpal Tunnel Release: Preliminary Study of 25 Hands

수근관증후군 수술 전후 임상증상과 전기생리학적 검사소견의 변화: 25손을 대상으로 한 예비연구

  • Yang, Ji Won (Department of Neurology, Gachon University Gil Medical Center) ;
  • Sung, Young Hee (Department of Neurology, Gachon University Gil Medical Center) ;
  • Park, Kee Hyung (Department of Neurology, Gachon University Gil Medical Center) ;
  • Lee, Yeong Bae (Department of Neurology, Gachon University Gil Medical Center) ;
  • Shin, Dong Jin (Department of Neurology, Gachon University Gil Medical Center) ;
  • Park, Hyeon Mi (Department of Neurology, Gachon University Gil Medical Center)
  • 양지원 (가천대학교 길병원 신경과) ;
  • 성영희 (가천대학교 길병원 신경과) ;
  • 박기형 (가천대학교 길병원 신경과) ;
  • 이영배 (가천대학교 길병원 신경과) ;
  • 신동진 (가천대학교 길병원 신경과) ;
  • 박현미 (가천대학교 길병원 신경과)
  • Received : 2013.12.06
  • Accepted : 2014.06.09
  • Published : 2014.06.30
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Abstract

Background: Electrophysiological study has been known as a useful method to evaluate the therapeutic effect of operation in idiopathic carpal tunnel syndrome (CTS). The purpose of this study was to evaluate the clinical and electrophysiological changes after carpal tunnel release (CTR) compared to the preoperative results. Methods: We analyzed the changes of nerve conduction study (NCS) before and after minimal open carpal tunnel release in 18 patients (25 hands) with CTS. Follow-up study was performed over 6 months after operation. Results: Clinical improvement was seen in all cases after CTR. In contrast, electrophysiological improvement was various depending on the parameters; the mean median sensory latency and nerve conduction velocity (NCV) improved significantly (p = 0.001). The mean median motor latency also improved, but NCV and compound muscle action potential (CMAP) amplitude did not change. The extent of improvement was evident in moderate CTS, but not in severe CTS. Conclusions: In this preliminary study, all subjects who underwent CTR achieved a clinical relief along with a significant improvement of electrophysiological parameters such as median sensory latency, sensory NCV and median distal motor latency. After CTR, a number of cases with mild to moderate CTS showed a prominent improvement of clinical and electrophysiological parameters, while fewer improvements were seen in severe CTS, although it did not reach the statistical significance.

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