A review of the orthopaedic literature suggests that traumatic ulnar p
hyseal arrest associated with radial fracture is a rare occurrence. Tw
enty-three cases of traumatic ulnar physeal arrest have been reported
in patients with distal radius fractures, and we report five additiona
l cases. A classification system for the distal ulnar growth deformiti
es is proposed, and the compensatory radial changes are reviewed. Surg
ical indications for treatment include cosmetic deformity, progressive
carpal subluxation, and decreased range of motion. Surgical options f
or treatment are discussed and include epiphysiodesis, ulnar lengtheni
ng, radial osteotomy, and the Suave-Kapandji procedure.