A cadaveric analysis of anatomical variations of the musculocutaneous nerve

Variations within musculocutaneus nerve (MCN) are very frequent. Such cases should be discussed extensively to reduce the risk of iatrogenic damage during surgery.In this paper, we wanted to present the unusual variability within the brachial plexus, which is the double MCN.We present a case of accesory MCN found during the cadaveric dissection.In this paper we encountered two musculocutaneous nerves, of which MCN proper runs as standard innervating the biceps brachii and the coracobrachialis muscle, while MCN accessory extending distally from MCN proper and innervates the brachialis.The case analysed by us is rare in the literature. Brachial plexus variations are very common and clinically important.