Fig. 1.

Radiographs are shown of a 38-year-old woman with left dysplastic hip. a The preoperative LCEA was -7° and the preoperative hip joint medialisation was 22 mm. The preoperative Harris hip score was 64. b The postoperative LCEA was 27° and the postoperative hip joint medialisation was 8 mm. c At the 5-year follow-up, the Harris hip score was 90 and no progression was found on osteoarthitic change. Letter L and L’ refer to LCEA, which means lateral centre edge angle. Letter d and d’ refer to hip joint medialisation, which was determined by measuring the distance between the ilioischial line and the medial aspect of the femoral head. The postoperative hip joint medialisation decreased from 22 mm to 8 mm, which indicated that the hip joint was translated medially 14 mm in this case