Vadzyuk N. Minimally invasive osteosynthesis for femoral neck fractures. (experimental-clinical study)

The dissertation is focused on a topical question of studying the treatment of femoral neck fractures in young adults. In the investigation were held x-ray-anatomical study of the proximal femur, a comparative assessment of biomechanical research, computer modeling simulation. Based on the data new technology for minimally invasive osteosynthesis was developed. The results of osteosynthesis for conventional and proposed methods were analised. Based on X-ray-anatomical study of computer tomograms of the proximal femur determined the shape, size and structure of the femoral neck that served as the basis for conducting experimental biomechanical simulation and computer modeling to optimize osteosynthesis of the femoral neck fractures with cannulated screws type AO / ASIF. Thanks to computer technology finite element simulation computer models of the proximal femur with taken into account the anisotropic properties of sections of the proximal femur, which helped to deepen the knowledge of areas of tension in the contact zone fragments and screws. Using experimental biomechanical studies on synthetic models parameters of stability of fixation fragments at different ways of entering screws were learned. Found that osteosynthesis with subcortical location of screws has the best stability properties. A new technology for minimally invasive osteosynthesis of femoral neck fractures with cannulated screws under C-arm control, which contributed to improved outcomes.