Periprosthetic distal femur fractures: current concepts.

Periprosthetic fractures of the distal femur most commonly present as fragility fractures associated with relatively minor trauma. These injuries are often complicated by osteopenia of the distal femur secondary to stress shielding or osteolysis. Effective management of periprosthetic fractures of the distal femur requires knowledge of both fracture fixation techniques and revision arthroplasty. This article reviews the treatment options for these challenging fractures with a particular focus on the management of displaced fractures with a stable prosthesis.