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NJBMS - Volume 1, Issue 1, July - September 2010

Pages: 40-44

A RARE CASE OF FOUR HEADED CORACOBRACHIALIS

Author: DEEPTI SHASTRI, KAVITHA S, ANAND A, EZHILARASI M, JAI GANGA

Category: Anatomy

Abstract:

Morphological variations of the Casser’s perforated muscle (Coracobrachialis) are well known. However our study describes a variation of the muscle hitherto not reported, to the best of our knowledge. During routine dissection, we observed an unusual muscle with four heads, in the front of the arm, inserting into the shaft of the humerus. Three of the heads originated from the coracoid process medial to the short head of biceps while the fourth head was lateral to it. One of the heads, akin to the Wood’s muscle1 passed superficial to the brachial artery and median nerve and inserted into the lateral supracondylar line. The brachialis muscle had a tendinous origin from the shaft of the humerus, enclosing the insertion of the Wood’s muscle. The clinical importance of this anomalous insertion is that it could be a cause of compression of the median nerve and brachial artery resulting in neurovascular disturbances in the forearm and hand.

Keywords: Coracobrachialis, four heads

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Editor in Chief of NJBMS Dr.Deepti Shastri, Professor and Head, Department of Anatomy, Academic Co-ordinator for Pre and Paraclinical Sciences, VMKV Medical College & Hospital, Salem.


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Index Copernicus (MCI recognized indexing body) ICV - 75.97, Scientific Indexing Services, Research Bib, Indian Science Publication, Eurasian Scientific Journal Index, Science Library Index, International Innovative Journal Impact Factor, Cite Factor, International Impact Factor Service,

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