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Rehabilitation Practice and Science

Translated Title

臂神經叢正中神經部分及尺骨神經部分混合神經傳導測量以及其在上臂神經叢傷害診斷上之應用

Abstract

This study demonstrates a technique to measure the mixed nerve conduction velocity (MNCV) of the ulnar and median component of the brachial plexus and its application on the diagnosis of brachial plexus lesion. Twenty patients with clinically confirmed pectoralis minor syndrome (Group I) and ten patients with traumatic brachial plexus injury due to traffic accident (Group II) were studied. The ulnar nerve was stimulated at the ulnar groove and the median nerve stimulated at the antecubital fossa of the elbow. The averaged nerve action potentials were simultaneously recorded from both axilla and Erb’s point with surface recording electrodes. MNCV of the ulnar and median components of the brachial plexus between the Erb’s point and axilla (clavicular segment) were calculated. It was found that MNCV of the ulnar component of brachial plexus was 40.31±2.75 m/sec (35.3±44.3 m/sec) on the affected side, and 60.43±4.67 m/sec (54.2±69.4 m/sec) on the unaffected side in group I patients. In group II patients, there was no significant difference in MNCV between the affected and unaffected sides for either ulnar or median component of brachial plexus. It is concluded that measurement of MNCV of the brachial plexus is a valuable technique in the diagnosis of brachial plexus entrapment lesion, such as pectoralis minor syndrome, but less sensitive to detect a traumatic brachial plexus lesion with axonal loss.

Language

English

First Page

57

Last Page

63

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