A hand surgeon is a medical doctor who specializes in diagnosing and treating conditions of the hand, wrist, and forearm. Hand surgeons are highly trained in the anatomy and physiology of the hand, and they use a variety of techniques to diagnose and treat conditions. These techniques include arthroscopy, tendon repair, nerve repair, joint replacement, and fracture repair. Hand surgeons also specialize in reconstructive surgery, which can help restore function and improve the appearance of the hand. Hand surgeons work closely with other medical professionals, such as physical therapists, to ensure the best possible outcome for their patients.