Morphometric studies of the muscular branch of the median nerve

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dc.contributor.authorOlave, Enrique [UNIFESP]
dc.contributor.authorPrates, José Carlos [UNIFESP]
dc.contributor.authorGabrielli, Carla [UNIFESP]
dc.contributor.authorPardi, Paulo Celso [UNIFESP]
dc.contributor.institutionUNIV LA FRONTERA
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2018-06-15T17:53:01Z
dc.date.available2018-06-15T17:53:01Z
dc.date.issued1996-10-01
dc.description.abstractThe branch from the median nerve to the thenar muscles has a proximal and lateral (recurrent) course and is vulnerable to lesions that affect these muscles. Because of its anatomical-clinical importance, this branch was studied in 60 palmar regions from 30 cadavers of adult individuals of both sexes, aged between 23 and 77 y. It arose from the lateral branch of the median nerve in 83.3% of the cases. Its origin was distal to the flexor retinaculum in 48.3%, at the distal margin of the retinaculum in 31.6%, in the carpal tunnel in 18.3% and proximal to the retinaculum in 1.7%; it pierced the retinaculum in 15%. The point of recurrence of the branch was localised topographically to 34.6 +/- 3.6 mm from the distal wrist crease; the angle between its recurrent course and the longitudinal axis of the hand averaged 66.8 degrees. In 50% of the cases the muscular branch innervated abductor pollicis brevis (APE), opponens pollicis (OF) and the superficial head of flexor pollicis brevis (FPB), in 40% it supplied only APE and OF, and in 10% a short muscular branch gave rise to independent branches in the palm and which supplied APE, OP and the superficial head of FPB. The so called 'accessory thenar branch' was found in 38.3%.en
dc.description.affiliationUNIV LA FRONTERA, FAC MED, TEMUCO, CHILE
dc.description.sourceWeb of Science
dc.format.extent445-449
dc.identifier.citationJournal Of Anatomy. New York: Cambridge Univ Press, v. 189, p. 445-449, 1996.
dc.identifier.issn0021-8782
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/44178
dc.identifier.wosWOS:A1996VP26400020
dc.language.isoeng
dc.publisherCambridge Univ Press
dc.relation.ispartofJournal Of Anatomy
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676
dc.subjectperipheral nervous systemen
dc.subjectthenar musclesen
dc.titleMorphometric studies of the muscular branch of the median nerveen
dc.typeinfo:eu-repo/semantics/article
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