腋神经发自臂丛的后束,常分为前、后两个分支,前支支配三角肌的前部和中部,后支主要支配三角肌的后部和小圆肌,管理臂上外侧部皮肤的感觉,并分布于肩关节[1,2]。其损伤常由肩部骨折、脱位、贯通伤或直接打击伤造成,往往是复合损伤的一部分,早期症状易被其他疾病掩盖,早期的诊断和 Axillary nerve bundle from the posterior bundle of brachial plexus, often divided into the anterior and posterior two branches, the anterior branch of the innervation of the anterior and middle of the deltoid, posterior branch of the main deltoid muscle and the management of the posterior minor, the outer arm of the management arm Skin feeling, and distributed in the shoulder joint [1,2]. The damage is often caused by shoulder fractures, dislocations, penetrating wounds or direct hit injuries, which are often part of a composite lesion. Early symptoms are easily obscured by other diseases. Early diagnosis and