Type of Article:  Original Research

Volume 6; Issue 4.2 (November 2018)

Page No.: 5853-5860

DOI: https://dx.doi.org/10.16965/ijar.2018.361


Vinay Sharma 1, C.S. Ramesh Babu *2, Vishnu Gupta 3.

1,*2 Associate Professor, Department of Anatomy, Muzaffarnagar Medical College, Muzaffarnagar, UttarPradesh, India.

3 Professor, Department of Anatomy, Muzaffarnagar Medical College, Muzaffarnagar, UttarPradesh, India.

Corresponding Author: C.S. Ramesh Babu, M.Sc., Associate Professor of Anatomy, Muzaffarnagar Medical College, N.H. 58, Opp. Begrajpur Industrial Area, Muzaffarnagar- 251203, UttarPradesh, India. Mobile no. +91-9897249202 E-Mail: csrameshb@gmail.com


Background: Median nerve formation exhibits several variations in the form of additional roots and /or communications which are relevant to the surgical explorations of shoulder, axilla and arm.

Aim: To study the variations in the formation of median nerve and its communications with musculocutaneous nerve in cadaveric upper limbs.

Materials and Methods: The study was done in 34 formalin fixed cadavers (68 upper limbs) and 10 isolated limbs.  All cadavers were conventionally dissected and observed for median nerve formation and dissected up to cubital fossa for presence of any communications.

Observations:   Out of the 78 upper limbs dissected, 12 limbs (15.38%) showed two lateral roots and one medial root contributing to the formation of median nerve. One case of bilateral presence of extra lateral root was found. The extra lateral root or communication from the musculocutaneous nerve was arising distal to coracobrachialis in 2 cases and proximal to the muscle in 10 cases. In three cases, absence of musculocutaneous nerve was observed and median nerve was supplying either all or some muscles of the flexor compartment. One of the cases of absent musculocutaneous nerve had two medial roots and one lateral root that is a very rare combination of variation not reported in the literature. In all cases of two lateral roots, the median nerve was formed medial or anterior to axillary artery. So we observed median nerve variation in 16 upper limbs [20.51%]

Conclusion: Thorough understanding of variations in the formation and communications of median nerve and its vascular relations is important for successful surgical outcome and clinical interpretation of lesions of the nerve.

Key Words: Median nerve, Musculocutaneous nerve, Double lateral roots, Double medial roots.


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Cite this article: Vinay Sharma, C.S. Ramesh Babu, Vishnu Gupta. VARIATION OF ROOTS IN THE FORMATION OF MEDIAN NERVE. Int J Anat Res 2018;6(4.2):5853-5860. DOI: 10.16965/ijar.2018.361