The reversed shoulder is an option for the patient with an extremely deficient rotator cuff and/or severely distorted shoulder anatomy. The implants "reverse" the ball and socket anatomy of the shoulder, placing the "ball" on the original socket (glenoid) side and the "socket" in the original ball (humerus). This designs imparts the mechanical stability normally provided by the rotator cuff for shoulder elevation (lifting of the arm). Watch and see how it works!