桡神经表浅指分枝可由于撕裂、手铐或紧袖口的压力,或外伤而受损。亦可因毒素或全身性疾病导致血管损害而受累。桡神经指分枝的电生理学检查几乎未见报道。本文介绍桡神经至中指基底部的内侧和外侧分枝的神经传导检查技术。表浅桡神经在前臂远端走行于皮下,而且分为4或5个指背神经。第1和第2分枝支配拇指内外侧皮肤;第3枝支配食指外侧部;第4枝支配食指和中指的结合部;第5枝与尺神经背侧皮枝交通供应中指和环指相 Radial Nerve Gauge Shallow branching can be impaired by tearing, handcuffs or tight cuff pressure, or trauma. May also be due to toxins or systemic diseases lead to vascular damage and involvement. Electrophysiological examination of the radial nerve branches has hardly been reported. This article describes the radial nerve to the medial base of the medial and lateral branches of nerve conduction examination. The superficial radial nerve runs subcutaneously in the distal forearm and is divided into 4 or 5 dorsal nerves. The first and second branches dominate the inner skin of the thumb; the third branches dominate the outer part of the index finger; the fourth branch dominates the combination of the index finger and the middle finger; the fifth and the dorsal branches of the ulnar nerve supply the middle and ring fingers