Modelagem tridimensional e análise de tensões em prótese de artroplastia lombar

Abstract

The prevalence of lower back pain emerges as the main complaint among orthopedic patients, with degenerative diseases of the intervertebral disc being the primary cause. The two possible surgical approaches for these cases are artodese and lumbar arthroplasty. Arthroplasty, the main focus of this study, involves the total replacement of the compromised disc with a prosthesis. The lumbar prosthesis can come in various configurations, with the most common being composed of two metal alloy plates separated by a polymeric core. The current study aims, through numerical analysis, to identify the behavior of different metal alloys used as biomaterials under different conditions, intending to simulate the stresses experienced by the organic disc. The numerical analysis was conducted using the ANSYS software and the Finite Element Method (FEM). The results showed that the Elastic Modulus of the metal alloy composing the prosthesis plates directly influences how the stresses are transmitted to the core.