Osteotomy (cutting a piece of bone) is a procedure in which a surgeon removes a wedge of bone near a damaged joint. Corrective osteotomy is a treatment for malunited articular fractures of the distal part of the radius or extraphyseal distal radius fractures that result in clinically significant pain and functional impairment because of palmar instability of the distal ulna. The decision is often based on age, degree of deformity, limitation of function, pain, and appearance of the wrist. The procedure gives satisfactory results if there are no degenerative changes in the radiocarpal or intercarpal joints and when the preoperative range of motion of the wrist is adequate.