Abstract

The median nerve (MN) is widely known among Anatomists to innervate the forearm. It usually gives out a branch to the Pronator Teres muscle as it enters the arm, while the muscles of the anterior compartment of the arm are majorly innervated by the musculocutaneous nerve (MCN). An accessory branch of MN was noticed in the left arm during student’s dissection of a male cadaver to innervate the lower part of the Brachialis muscle (BM). The branch was given out at the infero-lateral side of the nerve and it coursed lateral to the lateral brachial vein and after small distance it disappeared into the Brachialis muscle to supply it. It is in view of the above that we are advocating that surgeons, neurologists and anaesthists should also be conscious of these variations and be meticulous in their efforts to interpret some of the symptoms induced by nerve lesion. This branch could be vital in reduce Brachialis muscle palsy in event of damage to MCN.

Authors and Affiliations