Type of Article: Case Report
Year: 2016 | Volume 4 | Issue 2 | Page No. 2179-2182
Date of Publication: 30-04-2016
ANATOMICAL VARIATIONS OF ACCESSORY OBTURATOR NERVE: A CADAVERIC STUDY WITH PROPOSED CLINICAL IMPLICATIONS
Yogesh Sontakke *1, Babu Raj Kiran M 2.
*1 Assistant Professor, Department of Anatomy, Academic Centre, JIPMER, Puducherry, India.
2 Junior Resident, Department of Anatomy, Academic Centre, JIPMER, Puducherry, India.
Address: Dr. Yogesh Sontakke, Assistant Professor, Department of Anatomy, Academic Centre, JIPMER, Puducherry, India. 605006. Mobile: 7489164644
Anatomical knowledge of variations of brachial plexus and the axillary artery is very vital in surgeries of axilla and shoulder. In an adult male cadaver, during routine Anatomy dissection, we found a common cord instead of usual medial cord and lateral cord in the right brachial plexus. This common cord gave a branch to coracobrachialis, lateral and medial roots of the median nerve, ulnar nerve, medial cutaneous nerve of arm and forearm and single branch to pectoral muscles. Median nerve gave a branch in the arm to supply biceps brachii, brachialis muscle and continued as lateral cutaneous nerve of forearm. The right axillary artery was also found variant. Its first usual branch, i.e., superior thoracic artery aroused from second part instead of first part of the axillary artery. An additional branch from its second part supplied the pectoralis minor muscle. An additional trunk from second part divided into the lateral thoracic artery and also supplied the subscapularis muscle. Because of clinical significance, knowledge of such possible variations may be obliging for physicians and radiologists.
Key Words: Brachial Plexus, Median Nerve, Musculocutaneous Nerve, Axillary Artery.
- Standring S, ed. Gray’s Anatomy. The Anatomical Basis of Clinical Practice. 40th Ed., Churchill Livingstone. 2008: 780–1.
- Yogesh AS, Joshi M, Chimurkar VK, Marathe RR. Unilateral variant motor innervations of flexure muscles of arm. J Neurosci Rural Pract. 2010; 1: 51–3.
- Bergman RA, Thompson SA, Afifi AK, Saadeh FA. Compendium of human anatomic variation: catalogue, atlas, and world literature. Baltimore, Munich: Urban and Schwarzenberg; 1988. pp. 139–43.
- AY Nasr. Morphology and clinical significance of the distribution of the median nerve within the arm of human cadavers. Neurosciences. 2012;17(4):336–44.
- NR Bhojak, JP Patel, JN Desai, SH Ram. Anatomical variation in musculocutaneousnerve- A cadaveric study. Nat J Integrated Res Med 2014;5(1):92–5.
- Jamuna M, Amudha GA. Cadaveric study on the anatomic variations of the musculocutaneous nerve in the infraclavicular part of the brachial plexus. J Clin Diagn Res. 2011; 5: 1144–7.
- Bhanu PS, Sankar KD. Bilateral absence of musculocutaneous nerve with unusual branching pattern of lateral cord and median nerve of brachial plexus. Anatomy & Cell Biology. 2012;45(3):207-10.
- Uglitta JP, Kadir S. Arteriographic study of variant arterial anatomy of the upper extremities. Cardiovascular Intervent Radiol 1989;12:145-8.
- Aastha, Jain A, Kumar MS. An Unusual Variation of Axillary Artery: A Case Report. Journal of Clinical and Diagnostic Research : JCDR. 2015;9(1):AD05-AD07. doi:10.7860/JCDR/2015/11680.5477
- Trotter M, Henderson JL, Gass H, et al. The origins of branches of the axillary artery in whites and in American Negroes. Anat Rec. 1930;46:133-7.
- De Garis, Swartley CF. The axillary artery in white and Negro stocks. Am J Anat. 1928;41:353–97.
- Verma R, Mishra S, Mahajan A. Unilateral variation in the branching pattern of axillary artery: a cadaveric study. Int J Anat Res 2014, Vol 2(1):292-94.
- Shantakumar SR, Rao KGM. Variant Branching Pattern of Axillary Artery: A Case Report. Case Rep Vas Med 2012: 1-3,Article ID 976968. doi:10.1155/2012/976968
- Moore KL, Persaud TVN. The cardiovascular system. In: The developing human, clinically oriented embryology. 6th ed. Philadelphia (PA): WB Saunders; 1998. p. 335-341.
Yogesh Sontakke, Babu Raj Kiran M. UNILATERAL VARIANT BRANCHING PATTERN OF BRACHIAL PLEXUS AND AXILLARY ARTERY. Int J Anat Res 2016;4(2):2179-2182. DOI: 10.16965/ijar.2016.171