1* Research Scholar, Department of Mechanical Engineering, NIT, Raipur, India.
2 Professor, Department of Mechanical Engineering, NIT, Raipur, India.
Hip implant failure caused by stress shielding, elevated contact pressure, and inadequate load transfer remains a major clinical concern in orthopaedic biomechanics, frequently resulting in implant loosening and revision surgery. This study systematically evaluates the biomechanical performance of arthroplasty and hemiarthroplasty hip implant configurations through comparative finite element analysis, with particular emphasis on the combined influence of stem taper geometry and advanced biomaterial selection. A three-dimensional femoral model reconstructed from computed tomography data was analysed under physiological loading conditions ranging from 2200 to 2800 N. Three implant materials—NbTiZrMo alloy, PEEK, and CFR-PEEK—were assessed based on equivalent elastic strain, von Mises stress, and contact pressure. The results indicate that CFR-PEEK reduces implant stress by approximately 18–25% compared with NbTiZrMo alloy while exhibiting substantially lower deformation than PEEK. In addition, hemiarthroplasty configurations demonstrate 812% lower stress levels and reduced contact pressures than arthroplasty under identical loading conditions, indicating improved load-sharing through the preserved natural acetabular interface. Unlike previous studies that primarily examined individual design parameters, the present work introduces an integrated framework that simultaneously considers implant configuration, taper geometry, and material selection. The findings demonstrate that CFR-PEEK provides a favourable balance between stiffness, deformation resistance, and stress distribution, highlighting its potential to reduce stress shielding, improve implant longevity, and support the biomechanical optimisation of hip replacement systems. .
Keywords: Hip implants; Total hip arthroplasty; Hemiarthroplasty; Finite element analysis; CFR-PEEK; Stress shielding. .
How to cite this article: Tiwari S, Jain NK. Finite element evaluation of material-dependent biomechanical behaviour in arthroplasty and hemiarthroplasty. Int J Drug Deliv Technol. 2026;16(74s): 1064-1078. DOI: 10.25258/ijddt.16.74s.127
Source of support: Nil.
Conflict of interest: None.