Because the shoulder joint has a large range of motion it is common that a rotator cuff muscle or tendon can tear through over stretching or rapid twisting of the joint. We explain the symptoms, treatment and rehabilitation to help cure your injury and prevent it recurring. The rotator cuff is a group of muscles which work together to provide the shoulder joint with dynamic stability, helping to control the joint as it rotates.The rotator cuff muscles consist of the supraspinatus, infraspinatus, teres minor and subscapularis muscles. Supraspinatus and Infraspinatus are the most commonly injured rotator cuff muscles particularly in sports which involve a lot of shoulder rotation, for example bowling in cricket, pitching in baseball, swimming