Computer modeling study of mechanical strength of metal and polymeric screws fixation in cortical bone

Abstract

Indications for osteosynthesis of bone fractures of extremities are increasing from year to year. Screws can be used alone or in combination with plates and nails. As a bone fracture, healing depends a lot on the stability of its fixation, so each component of the biomechanical system that is fixing bone fragments is important. The fixation properties of screws depends from many factor, such as bone diameter, the thickness of the cortical layer, the quality of bone tissue, the mechanical properties of the material that was used for screws manufacturing. The use of computer modelling helps to study biomechanical interactions between the screw and the bone tissue according to the applied load.