[Malignant tumor (including metastasis) as a cause of pathologic fracture].

Pathological fractures due to primary malignant bone tumors are extremely rare. The first step in their treatment is biopsy and stabilization with external or internal fixation including bone cement. The tumor is then typed, graded and staged. A multimodal therapy follows. In cases of bone metastases the tumor is immediately removed and internal fixation or endoprostheses are used for stabilization. Operative procedures and results are demonstrated in patients with metastases of the proximal femur.