Is it the coracobrachialis superior muscle, or is it an unidentified rare variant of coracobrachialis muscle?

The coracobrachialis muscle (CBM) originates from the apex of the coracoid process, in common with the short head of the biceps brachii muscle, and from the intermuscular septum. The CBM demonstrates variability in both the proximal and distal attachment, with some extremely rare varieties, such as...

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Bibliographic Details
Published in:Surgical and radiologic anatomy (English ed.) 2021-10, Vol.43 (10), p.1581-1586
Main Authors: Olewnik, Łukasz, Zielinska, Nicol, Gołek, Łukasz, Aragonés, Paloma, Sanudo, Jose Ramon
Format: Article
Language:English
Subjects:
Aged
Anatomic Variations
Anatomy
Cadaver
Female
Humans
Imaging
Medicine
Medicine & Public Health
Morphology
Muscle, Skeletal
Orthopedics
Radiology
Septum
Shoulder
Shoulder Joint - abnormalities
Surgery
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Description
Summary:The coracobrachialis muscle (CBM) originates from the apex of the coracoid process, in common with the short head of the biceps brachii muscle, and from the intermuscular septum. The CBM demonstrates variability in both the proximal and distal attachment, with some extremely rare varieties, such as the coracobrachialis superior, coracobrachialis longus and coracocapsularis muscle. This case report describes an extremely rare variant of the coracobrachialis superior muscle, or a very rare variant of the CBM. Our findings highlight the importance of muscle variants in the shoulder region, especially the coracoid region, and are significant for radiologists, anatomists, physiotherapists and surgeons specializing in the shoulder joint.
ISSN:0930-1038
1279-8517
DOI:10.1007/s00276-021-02773-y