Abstract

COMMUNICATION BETWEEN THE MEDIAN NERVE AND MUSCULOCUTANEOUS NERVE: A CADAVERIC STUDY

Arpitha Shetty* and Kaushal Kumari Patel

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Abstract

Background: The musculocutaneous nerve originates from the lateral cord of brachial plexus and recieves fibers from C5, C6, & C7 nerve roots, supplies the muscles of the anterior compartment of the arm. The nerve after piercing the Coracobrachialis muscle travels between the Brachialis and Biceps brachii in the arm. Median nerve comprises medial & lateral roots. Lateral root fibers derive from C8 and T1 whereas medial root fibers derives from C5, C6, and C7 nerve roots. The Median nerve does not give any branches in the arm. In the course of dissecting left upper limb of male cadaver anatomical variation in the branching pattern of Brachial plexus has been observed. A communicating branch was seen between MCN & MN. Materials and Methods: The present study was carried out on an adult embalmed cadaver in the department of Rachana Sharira of JSAM Nadiad, India. As the axilla and arm were dissected an anatomical variation in the branching pattern of the Brachial plexus was noted and photographs were taken. Results: A communicating branch from the Musculocutaneous nerve emerged after it pierces the Coraco Brachialis muscle and got attached to the median nerve. Conclusion: Understanding the variations in the brachaial plexus branches is important for upper limb surgery, post-traumatic assessments, brachial plexus blocks, and arm peripheral nerve restoration.

Keywords: Musculocutaneous nerve, Median nerve, Anatomical variations, Brachial plexus.