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International Journal of Anatomical Variations

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Sharmila Bhanu P*, Devi Sankar K and Susan PJ
1 Department of Anatomy, Narayana Medical College, Chinthareddy Palem, Nellore, India, Email: [email protected]
*Correspondence: Sharmila Bhanu P, MSc, Assistant Professor, Department of Anatomy, Narayana Medical College, India, Email: [email protected]

Received: 28-Jul-2009 Accepted Date: Jan 20, 2010; Published: 23-Feb-2010

Citation: © IJAV. 2010; 3: 27–29.

This open-access article is distributed under the terms of the Creative Commons Attribution Non-Commercial License (CC BY-NC) (http://creativecommons.org/licenses/by-nc/4.0/), which permits reuse, distribution and reproduction of the article, provided that the original work is properly cited and the reuse is restricted to noncommercial purposes. For commercial reuse, contact [email protected]


The anatomical variations in the formation, course and termination of brachial plexus are well documented and have clinical significance to surgeons, neurologists and anatomists. The present case report describes the unusual origin of median nerve, arising directly from the lateral cord without the union of lateral and medial roots of brachial plexus. A communicating branch existed between the ulnar nerve and anterior division of middle trunk. The lateral pectoral nerve was arising from anterior divisions of upper and middle trunks as two separate branches instead from lateral cord. The branches then joined together to form the lateral pectoral nerve. The medial cord instead of its five terminal branches, had only three branches, the ulnar nerve, medial pectoral nerve and a single trunk for the medial cutaneous nerve of arm and forearm which got separated at the middle of the arm. The variations of the lateral cord and its branches make it a complicated clinical and surgical approach which is discussed with the developmental background.

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Citations : 2140

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