Fig. 1A–D.

(A) A femoral neck fracture 6 weeks after resurfacing arthroplasty was the reason this hip resurfacing failed. (B) The preoperative radiograph of the patient’s hip showed a preoperative neck-shaft angle of 118° after a previous varisation osteotomy. (C) Reevaluating the postoperative radiographs, we observed a 15° valgus position of the femoral component and notching at the head-neck junction. (D) The hip was revised to a conventional stem with a modular large metal head; the socket was left in situ. The patient did well after the revision surgery.