Z.T. Izmailova

Transosseous osteosynthesis is widely used in case of musculoskeletal system fractures and pathologies. Computer modelling is one of ways of efficiency rising of use transosseous osteosynthesis and research of the extremities bones condition at transosseous osteosynthesis. Creation of computer models is based on abstraction from the concrete phenomenon or the researched object - original. It will consist of three stages: first - creation of substantial model, second - creation of a geometrical model and the third - conducting of computing experiments series, for the analysis, interpreting and comparison of modelling results to real behaviour of researched object. Computer modeling is used as it makes it possible to carry out research and make calculations that are difficult in comparison with practical experiment because of financial and physical obstacles. Analysis of transosseous osteosynthesis models in case of extremities bones, developed on basis of X-ray pictures in SolidWorks program, allows us to estimate permissible loading when walking, flexion and extension, single- and double-support standing, also the influence of muscle force and modular transformation on bone regeneration process and to define rigidity of external fixing devices. The are surveyed various fractures of the top and bottom extremities in this work. The model is created in view of geometrical sizes and mechanical parameters of bones and apparatuses of external bracing for each type of fractures. Also in this work presented results of experimental researches of stiffness of external fixation apparatuses in case fractures of bones the forearms necessary for the estimate of stress-strained state research adequacy of a forearm bones at transosseous osteosynthesis, performed in COSMOSWorks program.