What Are Tendinitis, Bursitis, and Impingement Syndrome of the Shoulder? Tendinitis, Bursitis and Impingement Syndrome are closely related and may appear alone or together. If the rotator cuff and bursa are irritated, inflamed, and swollen, they may become squeezed between the head of the humerus and the acromion and cause pain. Over many years, repeated […]