Radial dysplasia (also known as radial deformity hand, radial longitudinal agenesis) is a congenital developmental abnormality that results in radial deviation of the wrist joint and forearm shortening. Its manifestations vary from mild to severe, ranging from mild anomalies to complete agenesis of the radius, radial metacarpal and thumb, and may also present with distal humeral dysplasia resulting in elbow stiffness. Treatment and Timing For this condition, surgery is chosen to treat the limb with the goal of ultimately obtaining maximum function. It is possible that multiple treatments may be required, usually starting with bracing and manipulation to pull the mother needs to help the child with passive training to help stretch the wrist joint and correct the elbow extension contracture. The most common method of surgical correction of the deformity is ulnar centralization, which improves hand function by placing the hand on the ulna and stabilizing the wrist joint in the straight position. Bracing or soft tissue release may be required prior to surgery. Alternatively, an external fixation brace may be applied followed by an ulnar wedge osteotomy to correct the ulnar deviation. If the thumb and its metacarpophalangeal joint are absent, an index finger thumbing procedure is also required after carpometacarpal centration.