Coracobrachialis muscle pierced by two nerves: case report

Abstract

The brachial plexus is formed by the union of the ventral rami of C5-T1. Contributions to the plexus by C4 and T2 differ. Thecoracobrachialis muscle is an elongated muscle in the superomedial part of the arm. It is a useful landmark for locating otherstructures in the arm. Variations exist to the coracobrachialis muscle, and to the formation of the brachial plexus, its terminalbranches and its relation to surrounding structures. In this report, the coracobrachialis muscle is pierced by two nerves, and oneof these nerves joins the median nerve after piercing the coracobrachialis muscle. Awareness of the possible variations of brachialplexus and its surrounding structures is necessary for adequate clinical, surgical and radiological management.