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Folia Morphol (Warsz). 2019 Apr 5. doi: 10.5603/FM.a2019.0037. [Epub ahead of print]

An unusual case of unilateral supernumerary extensor carpi radialis muscle.

Author information

1
Department of Anatomy and Embryology "Victor Babeş" University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timisoara, Romania.
2
Department of Microscopic Morphology, "Victor Babeş" University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timisoara, Romania.
3
Department of Anatomy and Embryology "Victor Babeş" University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timisoara, Romania. vaida.monica@umft.ro.
4
Pediatric Surgery Clinic of Emergency Children's Hospital, Doctor Iosif Nemoianu 2, 300011 Timisoara, Romania.

Abstract

An uncommon anatomical variant of muscle was found during the dissection of the forearm region, that can be considered as a supernumerary extensor carpi radialis muscle. The identified extensor carpi radialis muscle has origin on the lateral supraepicondylar ridge of the humerus, and an unusual insertion on the tubercle of the scaphoid bone. The presence of this supernumerary muscle may cause diagnostic errors in the forearm region, and can produce a debilitating pain syndrome by secondary compression of adjacent nerves, vessels or tendons due to its course along the anterior compartment of the forearm.

KEYWORDS:

extensor carpi radialis longus muscle; forearm; supernumerary muscle

PMID:
30949998
DOI:
10.5603/FM.a2019.0037
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