Shoulder Labrum Injuries in Baseball: Why Repetitive Throwing Can Damage the Shoulder Joint Over Time Baseball players across the USA, UK, Europe, and Australia face shoulder labrum injuries at alarming rates, representing a critical threat to throwing longevity from youth leagues to the professional ranks. The glenoid labrum is a thick ring of fibrocartilage surrounding the shoulder socket that deepens the joint, acting as a vital anchor for the long head of the biceps tendon and providing essential structural stability. High-velocity overhead throwing subjects this delicate structure to extreme compressive, shear, and distraction forces during the late cocking and early deceleration phases of the throwing motion. These repetitive, violent stresses…