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CC BY-NC-ND 4.0 · Journal of Morphological Sciences 2019; 36(01): 051-054
DOI: 10.1055/s-0038-1676860
Case Report
Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil

Third Head of the Biceps Brachii Muscle and a Communication between the Musculocutaneous and Median Nerves: A Case Report

Caroline Dussin
1   Department of Anatomy, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
,
Lucas Oliveira Moyses
1   Department of Anatomy, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
,
Sávio Lana Siqueira
1   Department of Anatomy, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
2   Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
3   Department of Surgery, Universidade Federal de Ouro Preto, Belo Horizonte, MG, Brazil
› Author Affiliations
Further Information

Publication History

05 November 2018

08 November 2018

Publication Date:
15 January 2019 (online)

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Abstract

Many authors have reported and classified several anatomical variations between the musculocutaneous (Mc) and median (Me) nerves, regarding their origin, number, and proximity with the coracobrachialis muscle. There also are, in the scientific community, records classifying the origin of supernumerary heads of the biceps brachii muscle. However, the occurrence of both aforementioned variations in the same arm is very uncommon. During a routine dissection of the right upper limb of a male cadaver, a third head of the biceps brachii was found originating from the fibers of the brachialis muscle, as well as a communicating branch between the Mc and the Me nerves, in the same limb. The objective of the present case report is to describe these multiple variations found, relating them and discussing their relevant clinical implications.

Keywords

anatomic variations - clinical anatomy - supernumerary head of biceps brachii muscle
 

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