A pertrochanteric fracture in an adolescent treated for an osteogenic sarcoma of the shaft of the femur with chemotherapy, tumour resection and endoprosthesis.

Osteosarcomas of the femur are treated nowadays, if possible, by chemotherapy, resection of the tumor and reconstruction with an endoprosthesis. There is not only a risk of epiphyseal fractures in the long bones due to chemotherapy but also of a fracture in the remnant of the treated femur. These fractures should be treated conservatively because of the risk of infection and non-union if treated operatively.