Eventos Anais de eventos
MECSOL 2022
8th International Symposium on Solid Mechanics
Numerical analysis of loading on the implant of a threaded osseointegrated transfemoral prosthesis
Submission Author:
Fábio Campos , RJ
Co-Authors:
Dayseane Donato, Fábio Campos
Presenter: Dayseane Donato
doi://10.26678/ABCM.MECSOL2022.MSL22-0143
Abstract
Between 2010 and 2020, 292,198 amputations of superior and inferior members were done in Brazil, taking into consideration only the ones carried out through the Unified Health System (SUS - Sistema Único de Saúde), being the majority of it of inferior members and as consequence of diabetes complications. The most common type of transfemoral prosthesis is the conventional one which connects to the residual limb through a socket. However, several studies reported volume alterations of the residual limb, which lead to discomfort, pain and skin injuries on patients, besides them presenting difficulties with its adaptation. With the objective of avoiding movement complications and health problems, a new type of prosthesis has been studied and improved in recent years, known as osseointegrated prosthesis. With this type of prosthesis, the prosthetic leg is connected to the residual limb through a fixture which is previously implanted and osseointegrated to the patient femur. This technology still presents a limited commercial use, but has been gaining space because of its advantages regarding the conventional socket prosthesis. Therefore, deeper studies and research of this type of prosthesis is necessary for a broader knowledge and spread of this model in Brazil. The objective of this work was to carry out a CAD modeling of a threaded osseointegrated transfemoral prosthesis and to conduct a numerical stress analysis of a falling scenario in three different time frames. Results showed high probability of implant failure, but no bone fracture.
Keywords
transfemural prosthesis, titanium, Finite Element Method, osseointegration, implants
