Shoulder Impingement syndrome is a common cause of shoulder pain. It occurs when there is impingement of tendons and/or bursa in the shoulder from bones of the shoulder. Overhead activity of the shoulder, especially repeated activity and poor biomechanics, is a risk factor for shoulder impingement syndrome. Other risk factors include bone and joint abnormalities.
With impingement syndrome, pain is persistent and affects everyday activities. The symptoms may increase with such motions as reaching overhead and/or reaching backwards. Often progressive weakness of shoulder ensues.
Over time, impingement syndrome can lead to inflammation of the rotator cuff tendons (tendinitis or tendonopathy) and bursa (bursitis). If not treated appropriately, the rotator cuff tendons can start to thin and tear resulting in a rotator cuff tear.