Flexor Pollicis Brevis Muscle. Anatomical Study and Clinical Implications

Author:

Caetano Edie Benedito,Nakamichi Yuri da Cunha,Alves de Andrade Renato,Sawada Maico Minoru,Nakasone Mauricio Tadeu,Vieira Luiz Angelo,Sabongi Rodrigo Guerra

Abstract

Introduction: This paper reports anatomical study of nature, incidence, innervation and clinical implications of Flexor Pollicis Brevis muscle (FPB). Material and Methods: The anatomical dissection of 60 limbs from 30 cadavers were performed in the Department of Anatomy of Medical School of Catholic University of São Paulo. Results: The superficial head of FPB has been innervated by the median nerve in 70% and in 30% it had double innervation. The deep head of FPB were absent in 14%, in 65%, occurred a double innervation. In 17.5% by deep branch of ulnar nerve and in 3.6% by recurrent branch of median nerve. Conclusion: The pattern of innervation more frequent in relationship to the flexor pollicis brevis muscle and should be considered as a normal pattern is that superficial head receives innervation of branches of median nerve and the deep head receives innervation of ulnar and median nerve.

Publisher

Bentham Science Publishers Ltd.

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