笔者在解剖1老年男性尸体时发现其右上肢肌皮神经自臂丛外侧束发出后先沿肱二头肌内侧下行,沿途发出分支支配臂前群肌后,在近臂中部移行为前臂外侧皮神经,斜行向外越肱二头肌表面至前臂外侧;此外,桡动脉在臂上部由肱动脉发出,此种变异少见,现报道如下。 I dissected an elderly male body found that the right upper extremity myocutaneous nerve bundle issued from the lateral bundle of the brachial plexus after the medial along the biceps down, issued a branch along the way to control the anterior group of muscles, in the proximal arm of the lateral forearm lateral skin Nerve, diagonally outward of the biceps surface to the outside of the forearm; In addition, the radial artery in the upper arm issued by the brachial artery, this variability rare, are reported below.