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International Journal of Anatomical Variations

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Unilateral variant origin of musculocutaneous nerve*

Author(s): Yogesh A Sontakke*, RR Fulzele, DW Tamgire, Manoj Joshi, Ujwal L Gajbe and Ravindra R Marathe

Musculocutaneous nerve branch out from lateral cord of brachial plexus. It innervates coracobrachialis, biceps brachii and brachialis muscles and continues as the lateral cutaneous nerve of forearm without exhibiting any communication with median nerve or any other nerve. Here, unilateral variant origin of musculocutaneous nerve is reported. In an adult male cadaver, a branch of median nerve represents musculocutaneous nerve which supplies coracobrachialis, biceps brachii and brachialis muscles and continues as lateral cutaneous nerve of forearm. This branch does not pass through coracobrachialis muscle. Such several variations surgeons should keep in mind while performing surgeries of axilla and upper arm.


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