all diseases of bones Treatment of fractures Trauma Surgeries Joint Replacement Surgeries diagnose and treat injuries caused by sports or physical activity; help you manage conditions that usually get worse over time, like arthritis or osteoporosis; and help you avoid pain and discomfort from using a muscle or joint too often (also called “overuse injuries”). Orthopedic doctors specialize in treating these parts of the body: hand and wrist foot and ankle knee shoulder and elbow neck back hips