A Cadaveric Study: Incidence of Third Head of Biceps Brachii from Pune Region of Western Maharashtra

Background: The biceps brachii is a powerful muscle in the anterior compartment of the upper limb. It is recognized for its function in arm flexion, shoulder stabilization and forearm supination. Anatomical variations, including accessory heads and a third head, are relatively uncommon and their functional significance is unclear. Aim: To evaluate the variations in the origin and incidence of the biceps brachii muscle heads, with a particular focus on the presence of a third head.Materials and Methods: A total of 100 arms from 50 adult cadavers were dissected to detect the presence of the third head of the muscle.The presence or absence of the third head of the biceps brachii muscle was noted on each cadaver and recorded. Results:Out of 50 cadavers evaluated, only one had a third head of the biceps brachii muscle, which was present bilaterally. Therefore, the incidence of the third head was found to be 2% (2 in 100 arms or 1 in 50 cadavers). These findings provide important insights into the anatomical variations of the biceps brachii muscle, which may have clinical implications for certain medical procedures or treatments.