Rotator Cuff (Supraspinatus) Pain? Here's how I help my patients recover! (Full Shoulder Rehab Program at link in comments) -- The Suprasinatus is 1 of the 4 rotator cuff muscles. It helps you lift your arm to the side, and also keeps the arm securely in the socket when you move it. -- A large part of the recovery for this injury involves improving the strength and stability of the entire rotator cuff, but here are some specific exercises I like to use for Supraspinatus rehab. -- Need more help?