Τετάρτη, 19 Ιουλίου 2017

Virtual Experimental Validation of Dynamic Osteosynthesis in the Treatment of Fractures of the Proximal Femur

Volume model of transtrochanteric fracture of the femoral bone fixed by Targon PF dynamic fixator was studied by the finite element analysis. The following parameters were measured: magnitude and direction of displacement of system elements, pressure between fragments, and von Mises stress distribution in the fixator depending on support screw plunging into the sleeve. The results indicate that stability of the bone-nail system increases during fracture union and 10-mm shortening of the femoral neck axis, which is seen from a decrease in system deformation under load by 16.8%, stress in the implant by 20.2%, and pressure in the zone of fragments contact by 19.8%.



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