 You get the idea. Left untreated? Overused trauma to young shoulders, elbows, knees, and wrists may require surgery. If your kids play hard and train hard, make sure you have expert advice for treating and preventing overuse injuries. Visit orthoinfo.org or stopsportsinjuries.org. A public service message from the American Academy of Orthopedic Surgeons and the American Orthopedic Society for Sports Medicine.