Fig. 2.

(A) This anteroposterior radiography shows secondary osteoarthritis caused by sequelae of Legg-Calvé-Perthes disease in a 35-year-old female. Preoperatively, leg length discrepancy was measured about 1.3 cm. (B) The immediate postoperative radiography shows that the affected limb was over-lengthened about 7 mm. The patients complained severe neurogenic pain on the affected leg, and motor weakness (Grade 0). (C) The total hip arthroplasty was revised with medicalization of acetabular cup and exchanging with smaller sized stem. Postoperatively, leg length discrepancy was not examined. (D) After 2 years, the radiograph shows no osteolysis around the right acetabular and femoral component, and the sciatic nerve palsy was improved (Grade IV).