[The influence of cyclophosphamide upon the healing of fractures in the rabbit (author's transl)].

The influence of cyclophosphamide (Ctx) upon the healing of fractures in the femur of the rabbit is reported. During treatment with Ctx the x-ray shows a reduced callus-formation; the fluorescence-microscopy reveals a decreased apposition of bone. Fracture-load, fracture-energy and mineral content of the intact bone are not influenced by Ctx. Four weeks after an operation fracture-load and fracture-energy are reduced almost by one half and the mineral content is decreased significantly.