Concomitant achondroplasia and developmental dysplasia of the hip.
Achondroplasia (ACH) is the most common form of hereditary dwarfism and presents with multiple musculoskeletal anomalies but is not normally associated with premature hip arthritis. Developmental dysplasia of the hip (DDH) is a spectrum of disease resulting in shallow acetabular depth and a propensity for chronic femoral subluxation or dislocation; it is among the most common causes of premature arthritis. This case report describes the diagnosis of symptomatic DDH in a patient with ACH and highlights difficulties of primary total hip arthroplasty (THA) as a treatment option. Intraoperative radiographic imaging is advised to ensure proper prosthesis placement. Femoral osteotomy may aid visualization, reduction, and avoidance of soft tissue injury. Concomitant ACH and DDH is a challenging problem that can be successfully treated with modified THA.
Department of General Surgery, University of California, Irvine, Medical Center Orange, CA, USA.
Tennison L
TL
Malcolm
Department of Orthopaedic Surgery, University of California, Irvine, Medical Center Orange, CA, USA.
Duy L
DL
Phan
Division of Adult Reconstruction, Department of Orthopaedic Surgery, NYU Langone Medical Center, NYU Hospital for Joint Diseases, New York, NY, USA.
Ran
R
Schwarzkopf
Achondroplasia; Developmental dysplasia of the hip; Total hip arthroplasty