Anat Cell Biol.  2012 Jun;45(2):136-139. 10.5115/acb.2012.45.2.136.

Four-headed biceps brachii, three-headed coracobrachialis muscles associated with arterial and nervous anomalies in the upper limb

• Catli MM
• Ozsoy U
• Kaya Y
• Hizay A
• Yildirim F
• Sarikcioglu L

• KMID: 2005877
• DOI: http://doi.org/10.5115/acb.2012.45.2.136

Abstract

A four-headed biceps brachii muscle and three-headed coracobrachialis muscle, high-originated radial artery and communication between the median and musculocutaneous nerves have been well documented in the available literature. However co-existence of these variations is rare. In this study we aimed to describe multiple variations in the upper limb and discuss their co-existence from clinical and embryological points of view.

Keyword

Upper extremity; Biceps brachii muscle; Coracobrachialis muscle; Musculocutaneous nerve; Median nerve

MeSH Terms

Median Nerve
Muscles
Musculocutaneous Nerve
Radial Artery
Upper Extremity

Figure

• 

  Fig. 1 (A-C) Photograph showing left side of the upper limb of our case. BA, brachial artery; CB, coracobrachialis mus c l e ; CBa , a r ticular head of coracobrachialis muscle; CBd, deep head of coracobrachialis muscle; CBs, superficial head of coracobrachialis muscle; CP, coracoid process; LACN, lateral antebrachial cutaneous nerve; LF, lacertus fibrosus; LH, long head of the biceps brachii muscle; Mb, muscular branch of the musculocutaneous nerve; Mc, musculocutaneous nerve; MN, median nerve; PMa, pectoralis major muscle; PMi, pectoralis minor muscle; SH, short head of the biceps brachii muscle; SnH1, supernumerary head (#1) of the biceps brachii muscle; SnH2, supernumerary head (#2) of the biceps brachii muscle; UA, ulnar artery; UN, ulnar nerve. Black arrows, communicating branch between the median and musculocutaneous nerves; white arrows, high originated radial artery.

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