Introduction: This study aims to demonstrate the importance of the finite element method (FEM) in total knee arthroplasty (TKA) to minimize the necessity for revision.
Materials and Methods: In our study, the TKA system implanted in femoral and tibial bones has been numerically analyzed by three-dimensional FEM. The results and the TKA model have been transferred to 3D SolidWorks 3D software. This study's application aspect focuses on the stress distribution in the interaction between the distal bone portions of the knee joint and the TKA. Our study presents the load distribution on the implants and the demonstration data applied in the normal surgical procedure. The load distribution has also been analyzed, and the degree of valgus was reduced by 3 degrees. This situation helped us to predict early polyethylene corrosion and failure in the future.
Results: When the valgus angle was reduced by 3°, the load distribution on the implants increased in the medial compartment, especially in the polyethylene insert. This led to the prediction of early polyethylene wear and failure in the future.
Conclusion: FEM emphasizes the importance of biomechanical load distribution during TKA. It is also a good method to reduce the incidence of TKA revision and increase patient satisfaction after TKA.
Key words: Finite element analysis, total knee arthroplasty, polyethylene wear knee
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