💪 What Is the Rotator Cuff? 💪 The rotator cuff is a vital group of four muscles that stabilize the shoulder joint, allowing for a wide range of movements. These muscles—supraspinatus, infraspinatus, teres minor, and subscapularis—anchor the head of the humerus within the shoulder socket, enabling you to lift, rotate, and perform many daily activities. Rotator cuff injuries are common, especially among athletes and those engaged in repetitive overhead motions, making understanding this anatomy