 Injuries to the TFCC may be preceded by a fall on a pronated outstretched arm; a rotational injury to the forearm; an axial load trauma to the wrist; or a distraction injury of the wrist in ulnar direction.However, not all patients can recall a preceding trauma occurred.Wendy Medeiros, OTR, CHT(ret) has designed a weight-bearing test to objectively analyze the stability of the wrist.