Singh G, Bay B H, Yip G W, Tay S
Department of Anatomy, National University of Singapore.
ANZ J Surg. 2001 May;71(5):301-2. doi: 10.1046/j.1440-1622.2001.02112.x.
Although variations in the attachments of the lumbrical muscles have been commonly reported, these have been seen mainly in the Caucasian population. The present study is the first reported case of such an anomaly in a Chinese cadaver in the literature.
The upper extremities of 26 Chinese (23 male and three female) cadavers were examined.
Dissection of a male 66-year-old Chinese cadaver has revealed the rare case of a bipennate first lumbrical muscle with an additional origin extending from the distal part of the forearm. Its first origin arose from the flexor digitorum profundus in the hand distal to the flexor retinaculum. The intrinsic muscles in the hands of all the other cadavers were normal.
An anomalous origin of the lumbrical from muscles in the forearm has the potential to cause compression of the median nerve in the carpal tunnel.
尽管关于蚓状肌附着点变异的报道较为常见，但这些主要见于白种人群。本研究是文献中首次报道的中国尸体出现此类异常的病例。
对26具中国尸体（23例男性和3例女性）的上肢进行检查。
对一名66岁中国男性尸体的解剖发现了罕见的双羽状第一蚓状肌病例，其有一个额外的起点从前臂远端延伸。其第一个起点起自屈肌支持带远端手部的指深屈肌。其他所有尸体手部的固有肌均正常。
蚓状肌起自前臂肌肉的异常起点有可能导致腕管内正中神经受压。
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