Fig. 2.

Case 2. A 96-year-old woman who sustained a periprosthetic femoral fracture of the right femur. (a) Anteroposterior radiograph of the right femur taken preoperatively, postoperatively, and 2 weeks, 8 weeks, and 1 year after initiation of teriparatide therapy. Obvious callus formation around the fracture site was observed at 2 and 8 weeks after treatment (arrow). After 1 year, remodeling of the fracture callus was complete (arrow). (b) CT scan of the right knee taken 4 weeks after initiation of teriparatide therapy.