An orthopedic surgeon specializes in medical and surgical treatment of the musculoskeletal system. This includes all bones, muscles, tendons and joints. A hand surgeon is a sub specialist in treatment of the hand and often the upper extremity as well. Dr. Badia is an orthopedic surgeon who also performed specialized training to limit his practice to the hand and upper limb. Occasionally, hand surgeons receive their fundamental training in plastic or even general surgery. Someone with this more specialized training should generally perform complex surgeries of the hand, wrist and elbow.