Spontaneous bilateral subcapital hip fracture due to multiple myeloma: an 18-month follow-up.

We present a rare case of bilateral subcapital hip fracture as a first sign of multiple myeloma in a young man. Right femoral neck fracture was treated by three Asnis screws and the left one by hemiarthroplasty. In order to avoid implant failure, we used zoledronic acid, a bisphosphonate compound, instead of methacrylate cement. After an 18-month follow-up, there was no evidence of avascular necrosis, no implant failure and no periprothetic fracture.