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JABFM Vol. 11 Issue 2, 2013

Total knee prosthesis polyethylene wear reduction by a new 
metal part finishing method

Total knee prosthesis polyethylene wear reduction by a new 
metal part finishing method

J Appl Biomater Funct Mater 2013; 11(2): 99 - 105

Article Type: ORIGINAL ARTICLE

DOI:10.5301/JABFM.5000153

Authors

Antonio Gigante, Valerio Cigna, Sandra Manzotti, Tommaso Villa, Eleonora Salvolini, Monica Mattioli-Belmonte

Abstract

Purpose: The purpose of this study was to assess a new metal component finishing designed to improve total knee prosthesis durability. Wear of ultrahigh molecular-weight polyethylene (UHMWPE), with generation of submicrometer- and micrometer-sized particles, has been associated with osteolysis and artificial joint failure. Wear extent is influenced by several factors, some of which are related to manufacturing. Methods: UHMWPE wear was assessed in metal prosthesis components finished with the Microloy® technology and in traditionally finished components by wear simulation experiments (pin on disk and knee simulator tests) and analysis of wear debris. Results: Microloy®-finished prosthesis showed a 48.5% reduction in UHMWPE total weight loss compared with traditional components (P=0.002). A statistically significant (P<0.05) reduction of UHMWPE debris were detected from the Microloy®-finished compared with the traditionally finished components. Conclusions: These findings suggest the Microloy® metal finishing may enhance the long-term performance of knee prostheses.

Article History

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Authors

  • Gigante, Antonio [PubMed] [Google Scholar]
    Department of Clinical and Molecular Sciences, School of Medicine, Università Politecnica delle Marche, Ancona - Italy
  • Cigna, Valerio [PubMed] [Google Scholar]
    Department of Clinical and Molecular Sciences, School of Medicine, Università Politecnica delle Marche, Ancona - Italy
  • Manzotti, Sandra [PubMed] [Google Scholar]
    Department of Clinical and Molecular Sciences, School of Medicine, Università Politecnica delle Marche, Ancona - Italy
  • Villa, Tommaso [PubMed] [Google Scholar]
    Department of Structural Engineering, Milan Polytechnic and IRCCS Galeazzi Orthopedic Institute, Milano - Italy
  • Salvolini, Eleonora [PubMed] [Google Scholar]
    Department of Clinical and Molecular Sciences, School of Medicine, Università Politecnica delle Marche, Ancona - Italy
  • Mattioli-Belmonte, Monica [PubMed] [Google Scholar]
    Department of Clinical and Molecular Sciences, School of Medicine, Università Politecnica delle Marche, Ancona - Italy

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