Maeda Satoshi, Kawai Katsushi, Koizumi Masahiro, Ide Junji, Tokiyoshi Akinari, Mizuta Hiroshi, Kodama Kodo
Department of Orthopaedic and Neuro-Musculoskeletal Surgery, Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
Anat Sci Int. 2009 Apr;84(1-2):34-40. doi: 10.1007/s12565-008-0005-y. Epub 2009 Feb 17.
We investigated the incidence of each pattern of the communications between the musculocutaneous and median nerves and discussed its morphological significance. The communications between both nerves were seen in 188 (41.5%) of 453 specimens. They were classified into five regular patterns according to their directions and formations. The incidence of the communication was significantly higher in those with excessive heads of biceps brachii than in those without them (p < 0.05). As a result, we established a classification of the regular pattern of the communications and revealed that the musculocutaneous and median nerves had the possibility of forming plexuses in the humeral area. The musculocutaneous nerves are regarded as the bundles that arise from the median nerve with the lateral cutaneous nerve of forearm and the branches to the biceps brachii and brachialis muscles.
我们研究了肌皮神经与正中神经之间各种交通模式的发生率，并讨论了其形态学意义。在453个标本中，188个（41.5%）可见到两条神经之间的交通。根据其走行方向和形态，它们被分为五种常见模式。肱二头肌头过多者交通的发生率显著高于无过多头者（p < 0.05）。结果，我们建立了交通常见模式的分类，并揭示了肌皮神经和正中神经在肱骨区域有形成神经丛的可能性。肌皮神经被认为是从前臂外侧皮神经和肱二头肌及肱肌分支的正中神经发出的束。
