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Strain shielding effect analysis of solid and porous Ti-6Al-4V alloy implanted femur bone using finite element
Sita Ram Modi1, Amardeep Dongare1, Kailash Jha1
1Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India.
Abstract:
In the proposed work, strain shielding effect analysis of solid and porous Ti-6Al-4V alloy implanted femur bone using finite element analysis is carried out. Strain shielding is a significant concern during total hip arthroplasty (THA) since it reduces bone growth and results in aseptic implant loosening due to the mismatch of femur and implant characteristics. The study examined solid and porous implanted femur bone under three loading conditions: standing, walking and stair climbing. The results show that strains on bone due to porous implants as compared to solid implants have been increased by 31, 24.3% and reduced by 12.18% for standing, walking, and stair climbing human activities, respectively. The findings show that porous implants promote bone growth and reduce aseptic implant loosening by lowering the strain and stress shielding effect.
