Fig. 3A–G.

Radiographs are shown of a 26-year-old woman with a dysplastic right hip with (A) an LCE angle of 16° and an AI of 12° without any signs of osteoarthritis (Tönnis osteoarthritis Grade 0 [55]). Initially she presented with limping and a negative impingement test. The mean Merle d’Aubigné and Postel score was 15. (B) The postoperative LCE angle was 32° and the AI −2°. At the (C) 10-year and the (D) 20-year followups, no osteoarthitic changes were seen. At last followup, the mean Merle d’Aubigné and Postel was 17, limping disappeared, and the impingement test remained negative. (E) In the corresponding false-profile [24] views, (F) the preoperative ACE angle of 39° increased to 45° postoperatively and (G) no osteoarthritic changes were seen at the 10-year followup. LCE = lateral center edge angle; AI = acetabular index; ACE = anterior center edge angle.