International Journal of Anatomical Sciences 2011,2(1):7-10

A Study on the Variations of Median Nerve formation in South Indian


Sarala Devi  KV,    Udhaya K,  Sudha Seshayan

Department of Anatomy, Vinayaka Mission’s Kirupanandha Variyar Medical College, Salem 636 308, Tamilnadu, India

Registrar, Tamilnadu Dr.M.G.R. Medical University, Chennai, India.

Key Words: Median nerve, lateral cord, musculocutaneous nerve

Abstract: The median nerve is one of the commonest nerve showing variations from the level of its formation to its termination. This is an important region where anesthetist, plastic surgeon and oncologist land up with problems more frequently due to variations and the mismanagement will result if they are not aware of these variations. The median nerve was studied regarding its formation in 60 upper limb specimens by conventional dissection method. Two specimens showed variations in our study. In one specimen, low level formation of median nerve with innervation of arm muscles was found. In another specimen the median nerve was formed at a higher level by the fusion of medial root with lateral cord of brachial plexus. These findings will provide anatomical knowledge for the reliable clinical correlation and surgeries.