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Biomaterials and Biomedical Engineering Volume 3, Number 2, June 2016 , pages 105-114 DOI: https://doi.org/10.12989/bme.2016.3.2.105 |
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 open accessMeasures of micromotion in cementless femoral stemsreview of current methodologies |
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Giovanni F Solitro, Keith Whitlock, Farid Amirouche and Catherine Santis
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| Abstract | ||
| Stability and loosening of implanted femoral stems in Total Hip Replacement have been well established as barriers to the primary concerns of osseointegration and long term implant survival. In-vitro experiments and finite element modeling have for years been used as a primary tool to assess the bone stem interface with variable methodologies leading to a wide range of micromotion, interference fit and stress shielding values in the literature. The current study aims to provide a comprehensive review of currently utilized methodologies for in-vitro mechanical testing as well as finite element modeling of both micromotion and interference of implanted femoral stems. A total of 12 studies detailed in 33 articles were selected for inclusion. Experimental values of micromotion ranged from 12 to 182 | ||
| Key Words | ||
| femoral stem; micromotion; cadaveric testing; finite element modeling; interference fit | ||
| Address | ||
| Giovanni F Solitro and Farid Amirouche: Department of Orthopaedic Surgery, University of Illinois at Chicago, 835 South Wolcott Ave. Chicago, IL, USA Keith Whitlock: College of Medicine, University of Illinois at Chicago, USA Catherine Santis: Department of Mechanical Engineering, University of Illinois at Chicago, USA | ||
