【摘要】 目的　为臂丛神经根性损伤提供有效的可供使用的动力神经源。　方法　在 46侧成人尸体标本上 ,观测了胸外侧神经起始部位、走行、分支、长度、支配部位 ,在放大镜下对其向近端进行无损伤分离 ,追踪其神经纤维来源并进行测量。　结果　 46侧中有 43侧起源于上、中干前股 ,3侧起源于上干前股 ;42侧胸外侧神经发出 3支 ,其中 2支分别支配胸大肌上、中部 ,另 1支为交通支 ;胸大肌上部支主要来源于 C5、6 ,其无损伤分离长度 (2 .3± 0 .5 ) cm,中部支及交通支来源于 C7,其无损伤分离长度(1.5± 0 .4) cm,3支长度分别为 (3.7± 0 .5 ) cm、(6 .1± 1.1) cm、(3.2± 0 .5 ) cm,胸外侧神经颈部至对侧肩胛上、上干前股及肌皮神经的长度分别为 (11.6± 1.2 ) cm、(12 .5± 1.3) cm、(15 .9± 2 .1) cm。　结论　健侧胸外侧神经移位可用于修复臂丛损伤。更多还原

【Abstract】 Objective To provide an effective donor nerve for the reconstruction of brachial plexus root avulsion Methods The origin,course,branches,domination,and the length of the lateral pectoral nerve were dissected and measured in 46 specimens,The origrination was also observed by micro dividing the lateral pectoral nerve from the lateral cord of brachial plexus to proximal under binocular Results Forty three sides of the lateral pectoral nerve originate from the anterior division of the upper and middle trunks and remainder three sides from the anterior division of the upper trunk;The lateral pectoral nerve divides into three branches on 42 sides,two of the three branches innervation the upper and middle parts of the pectoral major muscle,the other being the communication branch The mean length of three branches are (3 7±0 5)cm,(6 1±1 1)cm,(3 2±0 5)cm respectively The nerve fibres of the branch dominating the upper parts of the pectoral major muscle originates from the C 5、C 6 and the length of the micro division of this branch is (2 3±0 5)cm,The other two branches originated from C 7 and the length of the micro division is (1 5±0 4)cm The mean distance between the contralateral lateral pectoral nerve and the ipsilateral suprascapular nerve is (11 6±1 2)cm,between the contralateral lateral pectoral nerve and the ipsilateral anterior division of the upper trunk is (12 5±1 3)cm and that between the contralateral lateral pectoral nerve and the ipsilateral musculocutaneous nerve is (15 9±2 1)cm Conclusions Contralateral lateral pectoral nerve transfer can be a potential donor nerve for treatment of brachial plexus root avulsion更多还原