Incidence of the Third Head of Biceps Brachii in Western Indian Population
Journal Title: National Journal of Integrated Research in Medicine - Year 2011, Vol 2, Issue 4
Abstract
Backgrond: Biceps brachii is muscle of the flexure compartment of the arm. Anatomic variation of the biceps brachii muscle is one of the most variations in upper limb. The most common variation is a third head, but four, five or even seven heads have been reported. This variation may present as a group of accessory fascicles arising from the coracoids process, Pectoralis major tendon, proximal head of the humerus, articular capsule of the humerus or from humerus itself. Aim: to report the occurrence of the third head of biceps brachii in a sample Indian population along the western region of India, and to compare with other racial groups from previous study. Method: A prospective evaluation was conducted on cadavers at Govt. Medical College, Surat in Gujarat. The upper limbs of 32 cadavers were dissected and observed for variation in the origin and insertion of the biceps brachii muscle bilaterally. Result: A third head for the biceps brachii muscle were found in six arms. The variations were bilaterally. The short & long head were normal however third head was humeral origin and also arose from pectoralis major tendon and inserted into the conjoined tendon of the biceps brachii muscle as usual. The variant was present in three males (9.37%, n=32). Conclusion: Awareness of incidence of this variation is necessary to avoid complication during pre-operative procedure or surgeries in the upper limb.
Authors and Affiliations
Padma Varlekar, Nilam K. Meghatar, C. D. Mehta
Keywords
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