Abstract
Dynamic loads from routine activities applied to the stem create dynamic stresses varying in time and resulting in the fatigue failure of the prosthesis components. Therefore, a finite element model can be used to predict mechanical failure. The purpose of this study was to develop a three-dimensional model of the cemented hip femoral prosthesis and to carry out finite element analysis to evaluate stress distributions in the bone, the cement and the implant compounds under dynamic loads from different human activities. Linear elastic analysis is adapted; von Mises stress, normal stress and shear stress are the values that are of concern. Results show that the stresses distribution in the femoral arthroplasty components depends on the human activity. The analysis also showed that the stresses are high in the proximal and distal parts of the cement mantle.