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作者在解剖一具成年男性尸体标本时,发现其右侧肌皮神经存在走行及其分支变异。为积累解剖学资料,报道如下:该例标本右侧肌皮神经主干(横径为3.1 mm)由臂丛外侧束发出后,沿着正中神经外侧缘和肱二头肌内侧缘下行,在距起点6.5 cm处发出第1分支,起始处横径2.7 mm,斜向外下,穿肱二头肌深面并支配该肌。在距起点8.5 cm处同时发出肌皮神经肱肌肌支(横径为2.9 mm)和正中神经的交通支(横径为2.8 mm)。正中神经自臂丛内、外侧束发出之后(横径为
When anatomizing an adult male corpse, the author found that the right dermis muscle nerve had its movement and its branch variation. To accumulate anatomical data, the report is as follows: The right trochanter nerve trunk (diameter 3.1 mm) issued by the lateral bundle of brachial plexus, along the medial nerve lateral margin and the medial border of the biceps down in the distance Starting from the first branch 6.5 cm at the beginning of the diameter of 2.7 mm, oblique outward, wearing biceps deep and dominate the muscle. At a distance of 8.5 cm from the starting point, the musculocutaneous brachialis branch (diameter 2.9 mm) and the median nerve branch (diameter 2.8 mm) were simultaneously delivered. The median nerve from the brachial plexus, after the lateral beam is issued (horizontal diameter