我们在对一具成人男尸进行解剖时发现,其左侧桡神经仅发出桡神经深支和5支桡侧腕长、短伸肌肌支;桡神经浅支缺如。前臂外侧皮神经增粗,横径为3.2mm。在前臂中部分为两支,内侧支横为径1.3mm,外侧支为1.7mm。两分支最后分布到鱼际肌表面皮肤、腕背桡侧2/5皮肤、拇指背侧及示指背桡半侧 When we dissect an adult male corpse, we found that the left radial nerve sends out only the deep branch of radial nerve and the five radial wrist long and short extensor muscle branch; the radial nerve lack of superficial branch. Forearm lateral nerve thickening, horizontal diameter of 3.2mm. In the forearm in part two, the lateral branch diameter of 1.3mm, lateral branch of 1.7mm. The two branches were finally distributed to the skin of the surface of the turbinate, 2/5 of the dorsal radial of the wrist, the dorsal side of the thumb and the dorsal half of the index finger