Glass I, Ring H
Institute of Neurophysiology, Loewenstein Rehabilitation Center, Raanana, Israel.
Electromyogr Clin Neurophysiol. 1995 Mar;35(2):107-12.
Carpal tunnel syndrome (CTS) is associated with sensory and/or motor dysfunction of the hand's fingers. The syndrome is caused by a continuous or intermittent pressure on the median nerve (NM) at the patient's wrist. 82 patients suffering from recent CTS symptoms, and 24 matched asymptomatic controls were tested. In the present study we examined five electrophysiological parameters and their correlations with a most commonly used clinical test--the Phalen test. The Phalen measure is the time from initial provocation until positive sign. The electrophysiological measurements are: NM Onset Sensory Velocity, NM Peak Sensory Velocity, NM Motor Nerve Velocity, NM Distal Motor Velocity, NM Residual Latency. Most of the symptomatic hands exhibited pathological values of their clinical or electrophysiological parameters. Phalen and Residual Latency were the most sensitive parameters. Phalen times were not significantly correlated with any of the five electrophysiological parameters, yet sensory velocity tended to decrease in patients with pathological Phalen values.
腕管综合征（CTS）与手部手指的感觉和/或运动功能障碍相关。该综合征是由患者手腕处正中神经（NM）受到持续或间歇性压迫所致。对82名近期出现CTS症状的患者以及24名匹配的无症状对照者进行了测试。在本研究中，我们检测了五项电生理参数及其与最常用的临床检查——Phalen试验的相关性。Phalen测量值是从初始激发到出现阳性体征的时间。电生理测量指标包括：正中神经起始感觉速度、正中神经峰值感觉速度、正中神经运动神经速度、正中神经远端运动速度、正中神经残余潜伏期。大多数有症状的手部其临床或电生理参数呈现病理值。Phalen试验和残余潜伏期是最敏感的参数。Phalen试验时间与五项电生理参数中的任何一项均无显著相关性，但Phalen试验值异常的患者其感觉速度往往会降低。
