Leg lengthening using intramedullary stressed reinforcement (experimental study)

The experimental studies made using 30 dogs have demonstrated that leg lengthening with the Ilizarov fixator in combination with intramedullary stressed reinforcement of tibia with Kirschner wires marked prolonged endosteal osteogenesis is noted due to increased microcirculation, intensive reorganization of regenerate bone to organotypic bone as well as fast growth of the bone parts of the regenerate bone and their contacting occurs. In most cases the rate of distraction was increased up to 1,25-2,0 mm per day to prevent premature consolidation. Union took place by 15-th day in all the cases. Intramedullary wires damaged a.nutritia neither during their insertion nor during further distraction. Apart from mechanical stability increase the intramedullary wires cause a biological effect which consists in reparative osteogenesis stimulation. Intramedullary stressed reinforcement with wires bent in the opposite direction is the only metho