Study of deformations of bone regenerate under different options of osteosynthesis of lower leg bones in the case of their congenital pseudarthrosis

Congenital pseudarthrosis of the leg bones is accompanied by its shortening and deformation. It’s still unclear what an optimal method surgical treatment. Objective. Using a mathematical model, to study relative deformations regenerate (RDR) in zone lower under different options osteosynthesis. Methods. The nonunion was modeled third tibia 4 variants osteosynthesis on were analysed: intramedullary rod needle (1); rod, spoke bone graft form block (2) or both (3) bones; with wrapping titanium mesh (4). A rotationally stable unstable used. Under influence load compression torsion determined values RDR pseudarthrosis. Results. In case option 1, rods types (due axial mobility their elements) do not provide minimal deformation regenerates bones, so there possibility growth during patient. Bone blocks grafts (options 2 3) take over part compressive level decreases up 20 times. Rotationally better conditions torsional loads, since reduced However, negate this advantage, providing rotational stability fragments legs. use provides additional strength fixation 10 % compared models for loading options. Conclusions. only that «grow» leads greatest regenerates. conditions. Blocks from reduce less than 0.1 options, %.