前臂尺神经干动作电位在轻度肘管综合征诊断中的应用  

Application of nerve action potential(NAP)of ulnar nerve in the forearm in diagnosis of mild cubital tunnel syndrome

作　　者：田东[1] 张凯丽[1] 顾雁浩[1] 

机构地区：[1]复旦大学附属华山医院手外科肌电图室,上海200040

出　　处：《中华手外科杂志》2007年第6期352-354,共3页Chinese Journal of Hand Surgery

基　　金：卫生部课题基金(2004-59)

摘　　要：目的寻求诊断肘管综合征的最敏感的电生理指标。方法2005年10月—2006年3月,对32例轻度肘管综合征的患者进行系统的电生理检测,并对数据进行分析。结果32例中肘段尺神经运动传导速度(MNCV)减低阳性率占50%,小指-腕感觉传导速度(SNCV)减慢及感觉电位波幅(AMP)降低的阳性率占40.6%,前臂尺神经于动作电位(NAP)波幅降低的阳性率占87.5%,肘段尺神经短段微移测定(SSCT)异常占59,4%,肌电图检测(EMG)阳性率占3.1%。结论前臂段(腕-肘)的尺神经NAP波幅较健侧下降>50%,是诊断早期肘管综合征较敏感的电生理指标之一。Objective To explore the most sensitive electrophysiological parameters for diagnosis of cubital tunnel syndrome. Methods Data of electmphysiological tests of 32 cases of mild cubital tunnel syndrome collected from October 2005 to March 2006 were analysed. Results For those diagnosed as cubital tunnel syndrome, 50% had reduction of motor nerve conduction velocity （MNCV） in ulnar nerve at the elbow. 40.6% had reduction of sensory nerve conduction velocity （SNCV） and sensory nerve action potential （SNAP） amplitude from little finger to wrist. The positive rate of amplitude reduction of ulnar nerve action potential （NAP）in the forearm was 87.5%. The abnormal rate of short segment conduction time（SSCT）of the ulnar nerve across the elbow was about 59.4%. The positive results in needle EMG was 3.1%. Conclusion Amplitude reduction of ulnar nerve NAP （wrist to elbow） ≥50% that of the contralateral side is one of the most sensitive parameter for diagnosis of early cubital tunnel syndrome.

关 键 词：肘管综合征 电生理学 尺神经干 动作电位 

分 类 号：R688[医药卫生—骨科学]