Development of a Three-Dimensional Finite Element Knee Prosthesis Model

Abstract

This paper presents the three-dimensional geometric modeling of the knee prosthesis components using the latest generation of CAD-CAE applications as DesignModeler and SpaceClaim under Ansys Workbench software package. The mesh generation and the contact conditions are presented. The parameterized virtual models of the knee prosthesis allow different changes in shape or dimensions which can lead to the optimization of the implant and of the biomechanics of the prosthetic knee.

Influences of Antero-Posterior Tibial Slope on the Prosthetic Knee Contact Stresses

“…Using advanced commands available in Design Modeler, a preprocessor of AnsysWork-bench15.07 software [19], the virtual model of knee prosthesis was constructed starting from the shapes and dimensions of the original Stryker type knee prosthesis [9,17]. The main commands used to elaborate the 3D virtual models of the prosthesis components are:…”

“…The finite element method is becoming one of the most important tools in orthopaedic biomechanics and it is used to evaluate biomechanical behavior of prosthetic knee, to evaluate and compare the proposed design of a custom femoral component with a conventional design, to evaluate the tibio-femoral contact stress, to estimate the contact area, the contact pressure and the stress status of the polyethylene tibial components [5][6][7][8][9][10][11][12][13]. The effects of antero-posterior tibial slope developed during tibial resection in total knee arthroplasty were studied as an important factor in the knee biomechanics [14][15][16][17][18].…”