The subscapularis, the biggest muscle mass on the rotator cuff, facilitates internal rotation of the arm for the shoulder. Its Major stabilizing operate is securing the ball towards the shoulder socket through pushing or lifting movements. A corticosteroid injection (“cortisone shot”). This could deliver temporary pain reduction but doesn't “cure” https://www.theorthopaedicandpainpractice.com/what-are-some-shoulder-pain-treatments/