臂丛颈7神经根支配主要代表肌的电生理研究  

Electrophysiologic study of C7 nerve root innervated musdes

作　　者：田东[1] 徐雷[1] 张凯莉[1] 顾玉东[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》2008年第5期280-282,共3页Chinese Journal of Hand Surgery

基　　金：卫生部临床学科重点基金资助项目（2007-66）;上海市周围神经显微外科重点实验室基金资助项目（05DZ22108）

摘　　要：目的通过电生理检测分析臂丛颈，神经根的主要代表肌。方法选择16例臂丛神经根性撕脱伤行健侧颈，神经根移位的患者，术中采用电生理检测，对颈，神经根支配肌的波幅进行分析，确定颈，神经根的主要代表肌。结果电生理检测表明背阔肌与肱三头肌长头均可较好地代表颈，神经根的功能。尤其是肱三头肌长头在所有16例患者的检测中，刺激颈，神经根所得复合肌肉动作电位（CMAP）波幅值均明显大于其余神经根所得波幅值；而背阔肌有4例（占25．0％），在刺激颈。神经根时所得CMAP波幅值与颈，神经根接近。结论将肱三头肌长头、背阔肌作为定位颈，神经根的代表肌更具有合理性与科学性。Objective To analyze the representative muscles innervated by C7 nerve mot via electrophysiologie testing. Methods Sixteen patients of root avulsions of the brachial plexus who underwent contralateral C7 transfer were involved in the study. Intra-operatively compound muscle action potentials CMAPs in various upper limb muscles were recorded while C7 nerve root was stimulated. Amplitudes of CMAPs were measured and compared to determine the representative muscles of the C7 nerve root. Results Electrophysiologic data showed that lattissimus dorsi muscle and triceps brachii muscle best represent function of the C7 nerve root. In all 16 cases stimulation of C7 resulted in higher CMAP amplitude in long head of the triceps than when any other nerve root was stimulated. CMAP amplitude of lattissimus dorsi muscle elicited by C7 stimulation was similar to that elicited by C7 stimulation in 4 cases （ 25.0% ）. Conclusion Long head of the triceps and lattissimus dorsi muscle are representative muscles of C7 nerve root.

关 键 词：臂丛 电生理学 颈 神经根 

分 类 号：R686[医药卫生—骨科学]