Acta Scientific Medical Sciences (ASMS)(ISSN: 2582-0931)

Research Article Volume 5 Issue 1

Consecutive Changes in Nerve Conduction Studies After Surgery for Carpal Tunnel Syndrome – Useful Parameters for Evaluating Postoperative Recovery

Mikio Muraoka1* and Kenji Watanabe2

1Department of Rehabilitation Medicine, Kameda-Daiichi Hospital, Japan
2Department of Orthopedic Surgery, Kameda-Daiichi Hospital, Japan

*Corresponding Author: Mikio Muraoka, Department of Rehabilitation Medicine, Kameda-Daiichi Hospital, Niigata, Japan.

Received: November 11, 2020; Published: December 14, 2020



Objective: We quantitatively evaluated indicators of postoperative recovery from surgery for carpal tunnel syndrome (CTS) and determined the most sensitive nerve conduction study [NCS] parameters.

Materials and Methods: NCSs were performed in 50 hands with CTS preoperatively, and at 1 and 3 months postoperatively. Four NCS parameters were assessed: abductor pollicis brevis-distal motor latency (APB-DML), index-distal sensory latency (DSL), 2nd lumbrical – interossei latency difference (2L-INT), and ring finger test (Ring).

Results: The 33 hands in which APB compound muscle action potentials (CMAPs) were preoperatively detected showed significant improvement in APB-DML over time. The 46 hands for which 2L CMAPs were preoperatively detected showed significant improvement in 2L-INT over time, clearly reflecting postoperative recovery. Index-sensory nerve action potentials (SNAPs) and Ring-SNAPs were undetected in 41 hands and 50 hands, respectively, and remained undetected at 3 months in 27 hands and 45 hands, respectively.

Conclusion: Our findings suggest that 2L-INT and APB-DML, in this order, are suitable parameters for evaluating postoperative recovery of CTS, while Index-DSL and Ring using SNAPs are not useful.

Keywords: Carpal Tunnel Syndrome; Nerve Conduction Study; Surgery; Median Nerve; Lumbrical



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Citation: Mikio Muraoka and Kenji Watanabe. “Consecutive Changes in Nerve Conduction Studies After Surgery for Carpal Tunnel Syndrome – Useful Parameters for Evaluating Postoperative Recovery". Acta Scientific Medical Sciences 5.1 (2021): 38-41.


Acceptance rate30%
Acceptance to publication20-30 days
Impact Factor0.851

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