Frazer Emily A, Hobson Mark, McDonald Stuart W
Laboratory of Human Anatomy, University of Glasgow, Glasgow, Scotland, United Kingdom.
Clin Anat. 2007 Oct;20(7):785-9. doi: 10.1002/ca.20521.
Few have examined the distribution of the radial nerve branch to brachialis, generally believed to be motor, within the muscle. We examined the right brachialis muscles of six dissecting room cadavers and found that four received a supply from the radial nerve. The radial nerve branch(es) supplied the inferolateral region of the muscle and was overlapped proximodistally and mediolaterally by the intramuscular branches of the musculocutaneous nerve, which lay on a more superficial plane. The results have implications for the anterolateral approach to the humerus for orthopedic surgery. Anterior splitting of the muscle will almost certainly damage the most lateral branches of the musculocutaneous nerve.
很少有人研究桡神经至肱肌分支在该肌肉内的分布情况，一般认为此分支为运动支。我们检查了6具解剖室尸体的右侧肱肌，发现其中4具接受了桡神经的供血。桡神经分支供应该肌肉的下外侧区域，在近端至远端以及内侧至外侧方向上被肌皮神经的肌内分支所覆盖，而肌皮神经的肌内分支位于更表浅的平面。这些结果对肱骨骨科手术的前外侧入路具有启示意义。肌肉的前侧劈开几乎肯定会损伤肌皮神经最外侧的分支。
