Both the shoulder and hip are ball and socket type joints. As part of the stabilizing component of these joints there is an internal sleeve, or attachment, called the labrum. The ball of the humerus (arm) or femur (leg) inserts into the socket and is partially held in place by the labrum. Tearing of the labrum can occur with traumatic injuries. This is often associated with pain. In some patients open surgical intervention is required for treatment of these labral tears. In patients with lessor degrees of tearing, PRP injection intra-articularly (into the joint itself), may result in symptomatic improvement on a long term sustained basis.