[Possibilities of free osteoplasty with distraction osteosynthesis in correction of a defect of the long tubular bone].

A defect of the upper half of the tibial bone was compensated by an increment of the transplant to the cut of the femur, separation of it and graded descending into the defect in experiments in 12 adult dogs. Investigations of osteogenesis, of the fate of freely transplanted bone and of the influence of the transplant displacement on the topography and vascularization of the surrounding soft tissues have shown that use of large bone transplants allows to shorten the time of filling the defect and reduces deformities of soft tissues. Higher vascularization of the extremity and partial demineralization of the transplant observed under conditions of distraction facilitated reestablishment of the arterial network and organotypical reconstruction of the transplanted bone.