Coracobrachialis Longus Muscle: Humeroepitrochlearis.

Cureus. 2018 May 13;10(5):e2615. doi: 10.7759/cureus.2615.

Georgiev GP, Tubbs RS, Landzhov B.

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Abstract

During a routine anatomical dissection of the right brachium of a 68-year-old male cadaver, an extremely rare variation of the coracobrachialis longus muscle was discovered. It started from the medial surface of the middle part of the humerus with a well-formed muscle portion and then continued into the well-presented distal tendinous portion, which was attached to the medial epicondyle of the humerus. We also briefly review the reported variations of the coracobrachialis and their potential clinical significance.

KEYWORDS:

coracobrachial variations; humeroepitrochlearis muscle

Figure 1

The right brachium

Muscles: Humeroepitrochlearis muscle body (black asterisk); classical coracobrachialis muscle (CB) (white asterisk); Humeroepitrochlearis muscle body (black arrows). Nerves: UN, ulnar nerve; MN, median nerve.