Variant Insertion of Double - Tailed Teres Major, an Anatomical Case Report

Introduction: teres major muscle of the scapular region, is located inferior to the teres minor. This connects the humerus bone with scapula posteriorly. This has anatomical importance of forming the intermuscular spaces and the clinical importance of repair of rotator cuff muscle tendons. Teres major muscle along with the latissmus dorsi, adducts and medially rotates the arm and assists in the extension of shoulder joint. The anatomical variation of teres major muscle is rarely documented. We have found the variation in teres major muscle insertion in a female cadaver on the left side, in which the said muscle merged with the triceps brachii and latissimus dorsi.