Pinch Strength and Electromyography in Cubital Tunnel Syndrome: Nerve Stability Pre- and Postsurgery.

IF 1.1 4区医学 Q3 ORTHOPEDICS

Orthopedics Pub Date : 2025-05-01 Epub Date: 2025-05-12 DOI:10.3928/01477447-20250414-02

Joo Young Cha, Ki Jin Jung, Jae-Hwi Nho, Sung Hwan Kim, Kun Il Seo, Seung Won Choi, Ji Eun Moon, Byung Sung Kim

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引用次数: 0

Abstract

Background: Cubital tunnel syndrome (CuTS) is a prevalent compressive neuropathy with various surgical treatments but no established consensus on the optimal technique. This study compared outcomes and electromyography (EMG) findings between in situ decompression (ISD) and anterior ulnar nerve transposition (AT) and assessed correlations between preoperative EMG parameters and muscle strength.

Materials and methods: We retrospectively analyzed 81 patients with unilateral idiopathic CuTS. Thirty-three underwent ISD and 48 underwent AT, determined by intraoperative ulnar nerve stability. Outcomes included pinch strength, 2-point discrimination, and functional scores (disabilities of the arm, shoulder and hand [DASH], visual analog scale, Bishop). Preoperative EMG measures were compound muscle action potential (CMAP) amplitude and conduction velocity. Correlations were analyzed with adjustment for age.

Results: Both ISD and AT improved DASH scores, pinch strength, and 2-point discrimination (P<.05), with no significant differences in postoperative outcomes. Preoperative CMAP amplitude correlated moderately with pinch strength in ISD (P<.05) but weakly or not at all in AT. Postoperatively, no strong correlations between EMG and pinch strength were observed.

Conclusion: Both ISD and AT yield comparable improvements in CuTS. Preoperative EMG, particularly CMAP amplitude, may predict muscle strength in ISD but is less predictive in AT, emphasizing the role of pathophysiology in interpreting results. Larger prospective studies are needed to refine surgical decision-making. [Orthopedics. 2025;48(3):159-165.].

查看原文本刊更多论文

肘管综合征的捏压强度和肌电图：手术前后的神经稳定性。

背景：肘管综合征（CuTS）是一种常见的压迫性神经病变，有多种外科治疗方法，但对最佳技术尚无共识。本研究比较了原位减压（ISD）和尺前神经转位（AT）的结果和肌电图（EMG）结果，并评估了术前EMG参数与肌肉力量之间的相关性。材料和方法：回顾性分析81例单侧特发性切口患者。33例行ISD， 48例行AT，由术中尺神经稳定性决定。结果包括捏捏强度、2点判别和功能评分（手臂、肩膀和手的残疾[DASH]、视觉模拟量表、Bishop）。术前肌电图测量为复合肌动作电位（CMAP）振幅和传导速度。对年龄调整后的相关性进行分析。结果：ISD和AT均可改善DASH评分、捏紧强度和2点辨别能力（ppp）。结论：ISD和AT均可改善CuTS。术前肌电图，特别是CMAP振幅，可以预测ISD的肌肉力量，但对AT的预测能力较差，强调病理生理学在解释结果中的作用。需要更大的前瞻性研究来完善手术决策。[矫形手术。48 2025;(3): 159 - 165。]。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Orthopedics 医学-整形外科

CiteScore

2.20

自引率

0.00%

发文量

160

审稿时长

3 months

期刊介绍： For over 40 years, Orthopedics, a bimonthly peer-reviewed journal, has been the preferred choice of orthopedic surgeons for clinically relevant information on all aspects of adult and pediatric orthopedic surgery and treatment. Edited by Robert D''Ambrosia, MD, Chairman of the Department of Orthopedics at the University of Colorado, Denver, and former President of the American Academy of Orthopaedic Surgeons, as well as an Editorial Board of over 100 international orthopedists, Orthopedics is the source to turn to for guidance in your practice. The journal offers access to current articles, as well as several years of archived content. Highlights also include Blue Ribbon articles published full text in print and online, as well as Tips & Techniques posted with every issue.