Distal radioulnar joint instability can be caused by a deficiency in the triangular fibrocartilage complex. It causes painful mechanical clicking and symptoms in the ulnar side of the wrist. Depending on the severity of the injury, the triangular fibrocartilage can be anatomically repaired using arthroscopic suture techniques. If the deficit is large the repair may require a tendon graft, which can be performed via a small incision.