Presence of Additional Head of Pronator Teres Muscle - Case Report

Arm and cubital fossa are the sites for frequent injuries and it is involved in many surgical procedures. Variations in the arm and cubital fossa have immense clinical significance. Accurate knowledge of these variations will be of considerable clinical significance when conducting surgeries of the arm, fracture management of humerus and diagnosis of various compressive neuropathies. During routine dissection of the upper limb, we observed an unusual additional head of pronator teres muscle and the entrapment of brachial artery between the tendon of biceps brachii and the bicipital aponeurosis. In this report an attempt has been made to highlight its embryological basis and clinical implications.