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The Influence of Sliding Velocity on Wear of Total Knee Arthroplasties

[+] Author Affiliations
Laura L. Borgstede

University of Illinois at Chicago

Thorsten Schwenke, Markus A. Wimmer

Rush University Medical Center

Thomas P. Andriacchi

Stanford University

Paper No. IMECE2004-59866, pp. 245-246; 2 pages
doi:10.1115/IMECE2004-59866
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Advances in Bioengineering
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4703-9 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

Polyethylene wear remains a major cause of aseptic loosening and subsequent revision of total knee arthroplasties (TKA). During implant development and evaluation, simulator wear tests provide valuable information on material and design performance of TKA but have not yet replicated the wear patterns seen in vivo. Recent studies indicate that the combination of contact forces, sliding velocity, and distance, impacts the wear outcome [1, 2]. However, the detailed role of sliding velocity between condyle and tibial plateau, in combination with axial loading, remained unresolved. We hypothesize that implant wear can be strongly correlated with the so-called FV-factor, the product of applied axial force and sliding velocity of the condyle on its tibial counterpart. The aim of this study was to look at wear pattern formation and overall volumetric material loss versus varying FV-factors.

Copyright © 2004 by ASME
Topics: Wear , Knee , Arthroplasty

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