Abnormal formation of Median nerve in Arm with lateral cord piercing the Coracobrachialis

Abstract

Anatomical variations of median nerve in arm with lateral cord of brachial plexus and the communication between its branches are being observed commonly but the abnormal formation of median nerve is not much reported in the literature. Comprehensive knowledge pertaining to abnormal formation of median nerve is extremely important in clinical and surgical procedures so as to avoid their injury. The present report describes an abnormal formation of median nerve with lateral cord is directly piercing the coracobrachialis muscle, observed in the arm region of a 55 years old Indian male cadaver. Thus, only in one specimen low formation of median nerve in the middle third of the arm was observed along with lateral cord piercing the coracobrachialis. Dissection method was employed and 32 upper limbs were studied, in one arm there is an abnormal formation of median nerve obtained from the Department of Anatomy, Government medical college, Nagpur, Maharashtra, India