Strength Analysis of Polymers Comparing with Ti-6Al-4V Used as Orthopaedic Implants by Dynamic Analysis

In human anatomy, the femur is the longest and largest bone. The selection of suitable materials for femoral bone implants is essential for ensuring structural stability, durability, and patient comfort. The present study investigates the mechanical behaviour of different femoral implant materials under dynamic loading conditions using Finite Element Analysis (FEA). The materials considered in this study include PEEK (Polyether Ether Ketone), PEEK 30C, polyurethane, Ti-6Al-4V, and S316L stainless steel. The mechanical response of these materials is evaluated by applying different loading conditions corresponding to patient body weights. The maximum displacement and von Mises stress are considered as the primary parameters for comparing implant performance. The density, Young’s modulus, and Poisson’s ratio of the selected materials are also taken into account to understand their influence on structural behaviour. Polymer-based materials such as PEEK, PEEK 30C, and polyurethane offer the potential advantage of reduced implant weight compared with conventional metallic materials, which may contribute to improved patient comfort. The FEA results provide insights into stress distribution and deformation in the implant, particularly in critical regions such as the femoral head and neck. The study aims to identify promising implant materials based on their mechanical response under dynamic loading. The findings can support preliminary material selection for femoral implants, while further experimental testing, fatigue evaluation, wear assessment, and biocompatibility studies are necessary to establish their suitability for long-term clinical applications. Thus it is concluded that polymer is a low density material it makes the patient to feel comfort to move his leg and the stresses obtained are within the allowable stress. Polymer materials has high corrosion resistance, wear resistance and also it is more bio-compatible to human body. So it is suggested that polymer material is suitable for the femur implantation.