The Journal of Arthroplasty
Volume 27, Issue 3 , Pages 354-357, March 2012

Minimum 5-Year Wear Analysis of First-Generation Highly Cross-Linked Polyethylene in Patients 65 Years and Younger

  • Amar S. Ranawat, MD

      Affiliations

    • Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York
    • Corresponding Author InformationReprint requests: Amar S. Ranawat, MD, Hospital for Special Surgery, 535 E. 70th St, New York, NY 1002.
    • ,
  • Panagiotis Tsailis, MD

      Affiliations

    • Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York
    • ,
  • Morteza Meftah, MD

      Affiliations

    • Ranawat Orthopaedics, Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York
    • ,
  • Trevor W. Koob, BA

      Affiliations

    • Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York
    • ,
  • Jose A. Rodriguez, MD

      Affiliations

    • Department of Orthopaedics, Lenox Hill Hospital, New York, New York
    • ,
  • Chitranjan S. Ranawat, MD

      Affiliations

    • Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York

Received 23 August 2010; accepted 9 July 2011. published online 16 December 2011.

Abstract 

The purpose of this study was to analyze wear rates of highly cross-linked polyethylene comparing the Martell and the Roman methods in 112 total hip arthroplasties in patients 65 years and younger, with a mean follow-up of 5.7 years. The mean wear rates in the Martell and Roman methods were 0.014 ± 0.05 mm/y and 0.011 ± 0.04 mm/y when including all values and 0.043 ± 0.028 mm/y and 0.038 ± 0.02 mm/y when negative values were assumed to be zero, respectively. Both Roman and Martell methods showed similar low wear rates with negative values. The Roman method had higher precision and was more user friendly because it required less steps to measure wear, especially when comparing with the manual feature of Martell method.

Keywords: total hip replacement, highly cross-linked polyethylene, Martell hip analysis, Roman software, wear rates

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 The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2011.07.003.

PII: S0883-5403(11)00335-4

doi:10.1016/j.arth.2011.07.003

The Journal of Arthroplasty
Volume 27, Issue 3 , Pages 354-357, March 2012

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