Rotator Cuff Internal Rotation: The Subscapularis Guide to Strength and Shoulder Health
When most people think about the rotator cuff, they think about the muscles on the back of the shoulder: the supraspinatus, infraspinatus, and teres minor. The fourth rotator cuff muscle, the subscapularis, sits on the front of the shoulder blade and is responsible for internal rotation. It is the largest, strongest, and most important
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