Stresses and Displacements for Virtual Models of Healthy and Osteoarthritic Knee Joint

Abstract

This paper presents advanced modeling and simulation methods, using the latest generation of CAD-CAE applications. For the geometric modeling of human knee joint embedded applications as DesignModeler, SpaceClaim under Ansys Workbench software package were used. The objective of this study is to present our contributions on the modeling, simulations and finite element analysis of the healthy and osteoarthritic human knee joint in order to quantify and investigate its biomechanical behavior. The main objective of this article is to present a complex three-dimensional model of the healthy knee joint and of the osteoarthritic joint which shows a 15otilt in varus, the joint being affected by osteoarthritis in both compartments, in order to predict stresses and displacements in their individual components. The applied forces were equal with 800 N and 1500 N. Finally the results obtained for normal knee and for OA knee joint are compared.

Influences of Varus Tilt on the Stresses in Human Prosthetic Knee Joint

“…Six 3D virtual models have been developed for prosthetic knee joint that include the following components: femur, tibia and three knee prosthesis components. To design the virtual model of the knee prosthesis, the Design Modeler application which is a pre-processor of Ansys Workbench 15.07 is used [11] We have taken into account the 3D virtual model of healthy knee joint (Figure 2) elaborated by our team based on CT images [3][4][5].…”

“…The finite element method is becoming one of the most important tools in orthopedic biomechanics, this method being used to analyze stresses and displacements of human bones and joints. Virtual modeling of human knee joint has been addressed in several articles [1][2][3][4][5][6].…”

“…Virtual models were analyzed with FEM, after performing a finite element model with tetrahedral type, hexahedral, or using automatic meshing methods [1][2][3][4][5][6][7][8][9][10]. With the advances in computer technology and software, the applications of finite element analysis have been expanded to simulation of total knee arthroplasty motion and strength, investigation of contact stress and wear mechanisms in artificial prostheses [5][6][7][8][9][10].…”