Strength analysis of femoral implant of bone anchored prosthesis

Osseointegration is a ground-breaking medical technique that has transformed the field of prosthetics, particularly in the context of limb replacement. It involves the direct integration of an artificial implant, typically a metal rod, into the patient’s residual bone, enabling a secure and stable connection for prosthetic limbs. This innovation has brought significant improvements in the lives of amputees, enhancing their mobility, comfort, and overall quality of life. One of the most significant advantages of osseointegration is the restoration of a more natural and intuitive limb movement. Traditional prosthetic limbs rely on sockets that are strapped to the residual limb, often leading to discomfort and a lack of proprioception. In contrast, osseo integrated prosthetics allow users to regain a closer approximation of their natural limb function, enhancing their ability to walk, run, and perform various daily tasks with ease. This paper is dedicated to the examination of the strength characteristics through stress simulations and fatigue calculations of a bone implant. The objective is to assess the implant capacity to withstand the load imposed by an amputee weighing 100 kg, ensuring structural integrity and preventing failure. The 3D model utilised in SolidWorks simulations was developed using data acquired from the analysis of 31 femur bones. These bones were examined through X-ray imaging in both Anteroposterior (AP) and Lateral (LAT) views, yielding a total of 62 analysed X-rays. Each X-ray image underwent meticulous analysis and measurements using the AutoCAD to determine the angles and distances between the bone canal axis and the mechanical axis. Subsequently, these individual values were amalgamated to derive a singular resultant angle and distance, which served as the basis for all subsequent simulations and calculations. The results could be used as a foundation for any research looking to examine and further study the strengths of a femoral implant.