Bilateral aberrant biceps brachii muscles with special reference to their common nerve trunks.
Bilateral aberrant biceps brachii muscles with special reference to their common nerve trunks.
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DOI：
10.2535/ofaj.80.77
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发表时间：
2003-10-01
期刊：
影响因子：
--
通讯作者：
Sasaki, Hiroshi
中科院分区：
文献类型：
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作者：
Kawashima, Tomokazu;Yoshitomi, Sayaka;Sasaki, Hiroshi
肱二头肌异常；在对一名94岁日本女性尸体进行上肢区域解剖时，观察到右侧异常头、左侧异常头和左侧异常束。我们检查了神经供应并仔细检查了这些异常的BB。右异常头和右肱肌的分支从肌皮神经作为一个共同的神经干出现，两个分支从腹侧进入每一块肌肉。左异常束上部的分支和BB短头作为肌皮神经的共同神经干出现，两个分支从背侧进入每块肌肉。左异常束下段和左异常头的分支分别从肌皮神经中出现，但剥离神经外膜后发现它们有密切的联系。根据这些观察结果，我们推测右侧异常头可能与肱肌分化，左侧异常头可能与BB长头分化，左侧异常束异常头可能与BB短、长头分化，这是基于神经总干的形成和神经纤维的密切关系。我们建议的肌肉分化与支配神经的进入面（腹侧/背侧）一致。
Aberrant biceps brachii muscles (BB); the right aberrant head, the left aberrant head, and the left aberrant bundle, were observed bilaterally in a 94-year-old Japanese female cadaver during a regional anatomy of the upper extremities. We examined the nerve supply as well as scrutinizing these aberrant BB. The branches to the right aberrant head and the right brachialis muscle arose as a common nerve trunk from the musculocutaneous nerve, and both branches entered each muscle from the ventral aspect. The branches to the superior portion of the left aberrant bundle and the short head of the BB arose as a common nerve trunk from the musculocutaneous nerve, and both branches entered each muscle from the dorsal aspect. The branches to the inferior portion of the left aberrant bundle and the left aberrant head arose separately from the musculocutaneous nerve, but they were found to be closely related after peeling off the epineurium. From these observations, we speculated that the right aberrant head could have differentiated from the brachialis muscle, the left aberrant head from the long head of the BB, and the left aberrant bundle aberrant head from the short and long head of the BB, based on the formation of the common nerve trunk and the close relartion of the nerve fibers. Our suggested muscular differentiation agreed with the entering aspect (ventral/dorsal aspect.) of the innervating nerve.