Sañudo J R, Mirapeix R M, Ferreira B
Department of Morphological Science, Autonomous University of Barcelona, Catalonia, Spain.
J Anat. 1993 Jun;182 ( Pt 3)(Pt 3):439-42.
Two cases with anomalous fascicles in abductor digiti minimi, noted in the course of dissecting 62 adult postmortem forearms, are described. Both fascicles arose from the flexor retinaculum and the antebrachial fascia; one was inserted into abductor digiti minimi and the other on the proximal phalanx of the 5th finger. The anomalous muscles crossed the ulnar nerve and in 1 case also the median nerve. In the 2nd case the palmar nerve to the 5th finger was seen to penetrate the anomalous muscle. The ontogeny, morphology and clinical significance of this anomaly are discussed in relation to previously described anomalies of the hypothenar muscles.
本文描述了在解剖62例成年尸体前臂过程中发现的两例小指展肌存在异常肌束的病例。两条肌束均起自屈肌支持带和前臂筋膜；一条止于小指展肌，另一条止于第5指近节指骨。异常肌肉跨过尺神经，其中1例还跨过正中神经。在第2例中，可见至第5指的掌侧神经穿经异常肌肉。结合先前描述的小鱼际肌异常，对该异常的个体发生、形态学及临床意义进行了讨论。
