Amirfazli “A Three-Dimensional Finite Element Stress Analysis for Tunnel Placement and Buttons in Anterior Cruciate Ligament Reconstructions”, J. Amirfazli, “A parametric analysis of fixation post shape in tibial knee prostheses”, Biomed. Amirfazli, “Contribution of loading conditions and material properties to stress shielding in tibial component of total knee replacements”, J. A typical stress contour predicted using finite element model of the tibia. James Raso and Adrian Liggins from the Glen Rose Rehabilitation Hospital supervise and give input into the project. The challenge of the project is being able to develop models from CT images and eventually be able to individualize the bone properties from CT images. This model could also be used for knee reconstruction. This project is improving on current models by making them patient specific by improving on the modeling of the bone (loading conditions).
There are current models being used for implant design. The proximal tibia with prosthesis, modelling a total knee replacement (TKR). Aspects anterior cruciate ligament reconstruction (endo button compression).
Also the loading properties are physiologically representative such as tibio-femur compression, pattelo-femur compression and soft tissue loading.Īpplications for this model include, total knee replacement implant design. This means that the mechanical properties of the model are orthotropic and heterogeneous. Bone properties are incorporated into the model making it physiologically representative of a normal knee. So far a model has been developed for the femur and tibia which is anatomically correct. Development of a Finite Element Tool for Stress Analysis of Surgically Altered Knee Bones
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