Design and FEA Analysis of Hip Implants with Stress-Relieving Features for Improved Biomechanical Performance
R. Pavankumar
, G. Mallesh
Abstract: Hip joint replacement surgery is common for patients with severe hip joint damage, and hip implant design critically affects biomechanical performance. This study examines how stress-relieving features (SRFs) affect hip implant’s biomechanical performance under different human actions. Objective: This study examines the biomechanical performance of hip implants under various human actions and proposes design features to reduce stress concentrations, improve reliability, and reduce implant volume. Methodology: Three geometries are modelled with the base model without SRFs, while Models I, II, and III had circular, diamond, and diamond indent SRFs. FEA static analysis is simulated using ANSYS 19.2 for walking, jogging, jumping, and descending stairs. Results: Compared to the baseline model, model with SRFs reduce stresses by 15-16%. Model III (Diamond Indent SRFs) performs best with minimal deformation and stress. Model I (Circular SRFs) reduces stresses but increases deformations, while Model II (Diamond SRFs) balances stress relief and structural stability. Discussion: Stress-relieving features (SRFs) improves hip implant’s mechanical performance under dynamic conditions. Conclusion: SRFs improve biomechanical performance and reduce material failure. The optimised SRF models can help manage deformations and stresses, and Model III (Diamond Indent SRFs) is best for applications that need high performance with low deflections and stresses.
Series on Biomechanics, Vol.38, No.3 (2024), 15-23
DOI:10.7546/SB.02.03.2024
Keywords: ANSYS; biomechanics; finite element analysis; Hip implant; human actions; static analysis; stress-relieving features
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| Date published: 2024-11-15
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