DESIGN AND STATIC MODAL ANALYSIS OF ARTIFICIAL KNEE PROSTHESIS USING FEM

Abstract

The generally acknowledged effective surgical method for treating osteoarthritis and other degenerative disorders of the knee is total knee arthroplasty (TKA). Nonetheless, current data on low patient satisfaction and survivability highlights the need of receiving the best possible endoprosthetic treatment. Artificial components are used to replace the natural joint surfaces in an effort to alleviate pain, restore function, and enhance the quality of life associated with health. Lightweight, high-load-bearing construction is the main need for this. The project's goal is to develop and evaluate a flexible prosthetic knee joint and identify options and strategies to meet the need for a well-thought-out replacement for a lightweight, readily operable prosthetic knee joint. Ansys software is used to analyse the knee dimensions, which are derived from measurements of the human body. This study examines the suitability of materials with characteristics such as low cost, great lifespan, and no maintenance for use in prosthetic knees. The improvement of knee prostheses over the last ten years has been significant, allowing individuals to continue engaging in numerous activities even after experiencing age or injury. The human knee-joint is a complicated system with a complexly structured femoral condoyle that glides over the complexly curved meniscus of the tibia bone, absorbing different critical stresses during different gait, movement, and sitting activities. Since the beginning of orthopaedic surgery, metal alloys have been the preferred materials. TI-6AL-4V, TI-6AL-7NB, ABS, and stainless steel are the materials that are most often used as biomaterials for knee implants. This project aims to create a 3D CAD model of prosthetic knee joint implants by allocating load combinations of biomaterials to the femoral and tibia components and analysing the distribution of von-misses stresses, total deformation, shear stress, and strain. 3D modelling programs ANSYS 15 finite element analysis software and Catia are used to simulate knee implants in three dimensions and determine the best material for knee prostheses.