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CC BY-NC-ND 4.0 · Journal of Morphological Sciences 2019; 36(02): 138-140
DOI: 10.1055/s-0039-1681108
Case Report
Thieme Revinter Publicações Ltda Rio de Janeiro, Brazil

Notes on the Accessory Flexor Carpi Ulnaris Muscle: A Rare Supernumerary Variation

Lucas Alves Sarmento Pires
1   Department of Morphology, Biomedical Institute, Universidade Federal Fluminense, Niterói, RJ, Brazil
2   Medical Sciences Postgraduation Program, Hospital Universitário Antonio Pedro, Universidade Federal Fluminense, Niterói, RJ, Brazil
,
Graciele de Caro Reis Machado
1   Department of Morphology, Biomedical Institute, Universidade Federal Fluminense, Niterói, RJ, Brazil
,
Rodrigo Mota Pacheco Fernandes
1   Department of Morphology, Biomedical Institute, Universidade Federal Fluminense, Niterói, RJ, Brazil
,
Jorge Henrique Martins Manaia
1   Department of Morphology, Biomedical Institute, Universidade Federal Fluminense, Niterói, RJ, Brazil
2   Medical Sciences Postgraduation Program, Hospital Universitário Antonio Pedro, Universidade Federal Fluminense, Niterói, RJ, Brazil
,
João Francisco Silva Champs
3   Orthopedics Service, Rede SARAH de Hospitais de Reabilitação, Brasília, DF, Brazil
,
Marcio Antonio Babinski
1   Department of Morphology, Biomedical Institute, Universidade Federal Fluminense, Niterói, RJ, Brazil
2   Medical Sciences Postgraduation Program, Hospital Universitário Antonio Pedro, Universidade Federal Fluminense, Niterói, RJ, Brazil
4   Traumatology and Orthopaedic Service, Hospital Salgado Filho, Rio de Janeiro, RJ, Brazil
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Further Information

Publication History

03 September 2018

28 January 2019

Publication Date:
28 February 2019 (online)

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Abstract

Variations of the forearm muscles are well described in the literature. In spite of that, reports regarding the accessory flexor carpi ulnaris muscle are scarce due to its rarity. This muscle usually originates from the medial epicondyle of the humerus with the flexor muscle mass and inserts itself into the palmar aponeurosis or the pisiform bone together with the flexor carpi ulnaris muscle. Supernumerary and anomalous muscles of the anterior compartment of the forearm have been associated with ulnar nerve and artery compression. Furthermore, they may also mimic neuromas and soft tissue tumors. The study of supernumerary muscles is necessary, as they may be an option to tendon grafts and muscle flaps. The aim of this paper is to describe the presence of the accessory flexor carpi ulnaris muscle on the left forearm of a cadaver fixated in a phenol solution and discuss its clinical and anthropological significance.

Keywords

anatomic variations - flexor carpi ulnaris muscle - ulnar nerve - ulnar artery - anthropology
 

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