FINITE ELEMENT ANALYSIS OF HIP JOINT TO PREDICT THE SUITABLE BIOCOMPATIBLE IMPLANT MATERIALS FOR FEMORAL HEAD USING MSC-NASTRAN

The fracture of the femoral head of femur bone which is situated in the hip joint is common nowadays, the reasons for fracture varies from accidents to diseases. It is one of the most important parts where whole body weight is transferred to the legs and it helps in performing daily activities. In this study, we are focused on the finite element analysis of this part to know the fracture with available bone implant material and also to understand the load-bearing capacity of these materials in real-life scenarios. We selected Natural bone, Zr–Nb alloy, Zirconia ceramic, and CF/PEK composite materials as implant materials from the literature. A three-dimensional cad model is prepared using PTC CREO 5.0 and analysis was carried out by applying the required boundary conditions using MSC-Nastran and Patran. It is observed from this study that Zirconia ceramic is best suited for the femoral head implant design in comparison with Zr-Nb alloy because Zirconia ceramic showed 0.0833 mm displacement/deformation in comparisons with 0.376mm displacement of Zr-Nb alloy. But stress distribution at the femoral shaft for both the materials is 10 MPa. As per weight saving is considered CF/PEK composite materials is good and materials properties are the same as bone, but more displacement is observed in comparison with bone, Zr–Nb alloy and Zirconia ceramic materials.