Figure 4.

A 59-year-old female patient with FNF. (a) Preoperative radiograph showing a Pauwels III type FNF. (b) Radiograph immediately after surgery showing an anatomical reduction was achieved. (c) Radiograph at six weeks postoperatively showing the anatomical reduction converted to a negative buttress position. (d) Postoperative view at 12 months showing nonunion of the fracture. (e) Radiograph at 20 months postoperatively showing femoral head necrosis. (f) Radiographs at 24 months after surgery showing that a total hip replacement was performed.