Pectoralis Major Tendon Transfer for Irreparable Subscapularis Tears

In patients with irreparable tears of the subscapularis tendon, the transfer of the pectoralis major tendon is a viable treatment option. The transfer of the upper 2/3 of the pectoralis major tendon to the humeral head is used for irreparable tears of the upper part of the subscapularis tendon and recreates the balance of the shoulder force couple, thus mimicking the natural function of the subscapularis and promoting pain relief. In case of a complete and irreparable rupture of the subscapularis tendon, the pectoralis major transfer can be combined with an additional transfer of the teres major tendon.