Abstract :
Biceps brachii, a powerful forearm supinator, is a muscle in which many anatomical variations have
been reported. Biceps brachii anomalies may play an important role in neurovascular compression
syndromes in the arm and also affect shoulder joint movements. Three significant morphological
variations in Biceps brachii were noted during routine dissection of upper limbs used for undergraduate
teaching purposes. An extra articular origin of tendon of long head of Biceps brachii which was passing
through the subpectoral tunnel formed by Pectoralis major was observed in one right upper limb. Nonfusion of two bellies of Biceps brachii with an accessory bicipital tendon was observed in one right
upper limb. Presence of one supernumerary head of Biceps Brachii with a communicating branch
between Median and Musculocutaneous nerves was observed in one right upper limb. Knowledge of
these variations is essential for Surgeons and Orthopaedicians during surgery involving shoulder, arm and elbow regions.
Keyword :
Biceps brachii, Supernumerary heads, Extra articular