The shoulder is a complex joint where several bones, muscles, and ligaments connect the upper extremity to the chest. The rotator cuff is a group of muscles and tendons that attach to the bones of the shoulder joint providing movement and stability to the shoulder. Inflammation of the rotator cuff tendons is called rotator cuff tendonitis or shoulder impingement and inflammation of the bursa that surrounds these tendons is called rotator cuff bursitis or shoulder bursitis.