Anatomic restoration of congenital hip dysplasia in adulthood by total hip displacement.

Congenital dysplasia, treated or untreated, produces a hip joint difficult to reconstruct and is even more difficult when coxarthrosis supervenes producing significant disability. Total hip replacement can be dramatically successful in these patients, and equals those with coxarthrosis without congenital dislocation. The acetabulum must be totally reconstructed and relocated as near as possible to its original orientation. Usually a small straight stem femoral component must be placed into a generally constricted femoral canal. A thoughtful preoperative plan including X-ray templates is absolutely essential for a successful reconstruction without postoperative complications.