Volume 56, Issue 4 (1 1998)                   Tehran Univ Med J 1998, 56(4): 6-12 | Back to browse issues page

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Amirsadri R, Barbarestani M, Akbari M, Farzan M. Study of recurrent branch of median nerve (Thenar's muscular branch) in relation to the flexor retinaculum and median in 64 hands (32 Men). Tehran Univ Med J. 1998; 56 (4) :6-12
URL: http://tumj.tums.ac.ir/article-1-1532-en.html
Abstract:   (4465 Views)
Variation of recurred branch of median nerve in relation to the median and flexor retinaculum are significant for both hand surgeons and specialists always. In this study, 64 cadaver hands (32 men) have been dissected. The median nerve was identified at the proximal edge of the flexor retinaculum, and in order to expose carpal tunnel the ligament was divided, and the above subjects were studied. The results are: 1) The relation of recurrent nerve to the flexor retinaculum was classified into 4 types: A) In (53.1%) of subjects, this branch arises from the median after the flexor retinaculum. B) In (31.3%) of subjects, it arises from the median in the carpal tunnel and the moves around the lower edge of flexor retinaculum and enters the thenar region. C) In (14.1%) of subjects, it arises from the median in the carpal tunnel and pierces the flexor retinaculum. D) In (1.56%) of subjects it arises, in the carpal tunnel and it divides into two subbranches here. One follows pattern A and the other pattern C. 2) In this step, the relation of the recurrent branch to the median nerve was studied. The results show that inspite of this image even though most often the recurrent branch arises from the lateral side of median, in (68.75%) of subjects it arises from it's anterior surface. The MC Nemar test reveals that there is no relation between manifestation of mentioned patterns with right or left hands.
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