腕管综合征中的尺神经传导异常。
Ulnar nerve conduction abnormalities in carpal tunnel syndrome.
机构信息
Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Baskent University, M. Fevzi Cakmak Cadde 5, Sok. No. 48, Bahcelievler, Ankara, Turkey.
出版信息
Muscle Nerve. 2011 Sep;44(3):352-7. doi: 10.1002/mus.22046.
INTRODUCTION
The aim of this study was to verify the involvement of ulnar nerve fibers in cases of carpal tunnel syndrome (CTS) and investigate the correlation between ulnar nerve conduction parameters and extra-median spread of symptoms.
METHODS
Electrophysiological studies were conducted in 93 CTS and 76 control hands. Patients were analyzed with regard to symptoms in the fifth finger.
RESULTS
In the CTS cases, ulnar distal motor latency (DML) and distal sensory latency (DSL) were significantly longer, and amplitudes were lower than in controls. Increased median nerve DML correlated with increased ulnar nerve DSL and decreased sensory amplitudes and conduction velocities (SCVs). In cases with symptoms in the fifth finger, ulnar nerve SCVs and amplitudes were lower than in patients without symptoms.
CONCLUSIONS
Pathological processes leading to median neuropathy in CTS may affect ulnar nerve motor and sensory fibers in the Guyon canal. This may explain the extra-median spread of sensory symptoms in CTS patients.
简介
本研究旨在验证尺神经纤维在腕管综合征（CTS）病例中的参与情况，并研究尺神经传导参数与症状的非正中分布之间的相关性。
方法
对 93 例 CTS 和 76 例对照手进行电生理研究。对患者的第五指症状进行分析。
结果
在 CTS 病例中，尺神经远端运动潜伏期（DML）和远端感觉潜伏期（DSL）明显延长，幅度低于对照组。正中神经 DML 增加与尺神经 DSL 增加以及感觉幅度和传导速度（SCV）降低相关。在第五指有症状的病例中，尺神经 SCV 和幅度低于无症状患者。
结论
导致 CTS 正中神经病变的病理过程可能影响腕管内的尺神经运动和感觉纤维。这可以解释 CTS 患者感觉症状的非正中分布。
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