Orthopedists treat arthritis, broken or dislocated bones, and osteoporosis. They treat tumors, fractures, infections, pulled tendons or strains, sprains, muscles, hip and knee problems, and bursitis. Moreover, orthopedists treat nerve diseases, back pain, and shoulder injuries. They also see several patients with carpal tunnel or rotator cuff injuries. The work of an orthopedic surgeon depends on the specialty they choose.