The MCN branches to brachialis muscle were derived from main trunk at 1/3 distal upper arm, most of which were single branch with a length of 5.2 cm and an average of 2.7 fascicles.
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- 肌皮神经肱肌肌支在上臂下1/3段由主干发出;以单支型为主;肌支长5.;2 cm;平均2