title: Posttraumatic acetabular dysplasia.
abstract: Injury to the acetabular triradiate physeal cartilage is a rare but potentially serious injury. When it occurs in young children acetabular growth may be delayed, leading to incongruency of the hip and subsequent subluxation. This series reviews 5 patients who sustained injury to the triradiate cartilage and subsequently developed acetabular dysplasia. The radiographic appearance of post-traumatic dysplasia is distinctly different than that of developmental dysplasia. In post-traumatic dysplasia the acetabular teardrop width and inner wall of the acetabulum is significantly increased with the femoral head being lateralized. Four patients have undergone acetabular reconstruction, with 3 patients having a periacetabular osteotomy and 1 having a Chiari osteotomy. The remaining patient with posttraumatic dysplasia has severe and symptomatic osteoarthritis and awaits a total hip replacement.
authors.affiliation: University of Berne, Switzerland.
authors.forename: R T
authors.initials: RT
authors.lastname: Trousdale
authors.forename: R
authors.initials: R
authors.lastname: Ganz
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D000293:Adolescent; D000328:Adult; D001848:Bone Diseases, Developmental / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D002675:Child, Preschool; D005260:Female; D050723:Fractures, Bone / Q000150:complications* / Q000628:therapy; D006801:Humans; D008297:Male; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000209:etiology; D010027:Osteotomy; D011859:Radiography