[Benign and semi-malignant bone tumor and tumorous lesions as a cause of pathologic fracture].

The aim of the treatment in cases of impending or manifest fracture within the area of a benign of semimalignant bone neoplasm is total osseous healing with a complete as possible preservation of function. In case of benign tumors and tumorlike alterations satisfactory results are often achieved by thorough curettage, perforation of sclerotic ridges and extensive cancellous tissue grafts. Relapses are often due to inadequate operative techniques. Semimalignant osteoclastomas require frozen section. Even in cases of disadvantageous localisations (neck of the femur, proximity to acetabulum, proximity to wrist), meticulously executed electrocauterisation allows a more radical operation and the maintenance of function of the joint.