Finite element analysis of the thickness for staggered dynamic compression bone plate treatment of femoral shaft fracture

Abstract

The main purpose of this paper is to investigate the biomechanical effect under different bone thickness, the number of screws and screw position in the case of staggered dynamic compression bone plate treatment of femoral shaft fractures using finite element method. In this study, we utilized SolidWorks 2010 to construct three-dimensional finite element model of bone plates and screws, parameterized finite element analysis techniques by using ANSYS to solve the maximum stress, maximum strain and deformation. The results from the study show that with the increase of bone plate thickness, stress, strain and deformation is nonlinear change. Comparison in terms of the number of screws, maximum stress and strain occurred in 10 of the screw system, the maximum deformation occurs in 4 Screw; screw position in terms of the maximum stress and strain generated in the screw position of 2-5-6-9 system, maximum deformation occurs in the position of the screw 3-5-6-8 system, but the amount of difference deformation anywhere in the system of only 1.245%, the difference is very small. Expected results of this study by the research can provide orthopedic surgeons to understand the biomechanical properties of bone plate bone screw system, and choose to use as a bone plate reference clinically to avoid the generation of fixation failure.