THIRD HEAD OF BICEPS BRACHII MUSCLE AND ITS CLINICAL IMPORTANCE: A CASE STUDY

Abstract

The Biceps brachii muscle belongs to the flexor group of muscles in the arm. As Biceps brachii is double headed muscle. It is one of the known variable muscles of the human body in terms of number and morphology. The third head of the biceps brachii muscle was identified bilaterally in an 84-year-old male cadaver during routine human cadaveric dissection for the purpose of education and learning of medical undergraduates in Department of Rachana Sharir, National Institute of Ayurveda, deemed to be university, Jaipur. Normally the Biceps brachii muscle has two heads i.e. Long and short head. In present cadaveric study third head of bicep brachii muscle has been identified while doing routine dissection for undergraduate scholars. The fleshy proximal attachment on lower 1/3 of anterior surface of shaft of humerus has been identified. It has been origin ate along with the superior part of the Brachialis and inserted into the bicipital aponeurosis, and deep to the long and short heads of the Biceps. This third head is supplied by a branch of the musculocutaneous nerve. The third head of biceps brachii may be an incidental finding at autopsy or during routine anatomical dissections. Unless symptomatic, the third head of biceps brachii may not be detected in clinical studies. Variant of biceps brachii may confuse a surgeon who performs procedures on the arm and may lead to iatrogenic injuries. The surgeons and traumatologists have to keep such muscular variations in mind. So, the knowledge of the existence of its variation is important for anesthetists and surgeons.