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Article
Implant Material Properties and Their Role in Micromotion and Failure in Total Hip Arthroplasty
International Journal of Mechanics and Materials in Design
  • Bradley Elliott
  • Tarun Goswami, Wright State University - Main Campus
Document Type
Article
Publication Date
3-1-2012
Abstract

One of the most vital criteria for hip implant longevity is bony ingrowth that would anchor the implant to the bone. However, motion between the implant and surrounding bone (called micromotion) can hamper this, eventually leading to pain, loss of motion, damage to the bone, and eventual revision of the surgery. The objective of this research was to determine how mechanical properties; namely Young’s modulus, affects micromotion and failure in the surrounding bone. Mathematical models were used, along with finite element analysis, to determine if elastic modulus played a role in both micromotion and bone failure. However, by increasing the modulus of the implant, the bone becomes susceptible to stress shielding. Therefore, it is important to optimize implants for both stress shielding and micromotion.

DOI
10.1007/s10999-011-9172-4
Citation Information
Bradley Elliott and Tarun Goswami. "Implant Material Properties and Their Role in Micromotion and Failure in Total Hip Arthroplasty" International Journal of Mechanics and Materials in Design Vol. 8 (2012) ISSN: 1569-1713
Available at: http://works.bepress.com/tarun-goswami/81/