Stress Prediction in the Dynamic Compression Plate with Changing the Configuration of the Screw Fixation

Abstract

Problem statement: Human femur fracture is one of the most frequent type of bone fractures. One of the widely used methods in an internal fixation is an application of the Dynamic Compression Plate (DCP). The configuration of the screw fixation plays a major role of the DCP stress. Approach: This research is proposed to investigate the stress distribution in the 14-hole DCP by using Finite Element Analysis (FEA), eight configurations of the screw fixation with the body weight of 50 and 70 kg. The maximum von Mises stress on the DCP in each configuration is used to find the best of the screw fixations. The equations of the maximum von Mises stress are formulated by the regression analysis. Results: The experimental results show that the relation of the maximum von Mises stress and the number of screws are the linear equation. Conclusion: The maximum von Mises stress from FEA could be predicted by using the linear equation.

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