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J Knee Surg 2008; 21(4): 320-326
DOI: 10.1055/s-0030-1247839
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© 2008 Thieme Medical Publishers

Triathlon Total Knee Arthroplasty – 4-Year Outcomes with a High-Performance Implant

Steven F. Harwin1 , Kenneth A. Greene2 , Kirby Hitt3
  • 1Beth Israel Medical Center and Albert Einstein College of Medicine, New York, NY
  • 2Northeast Ohio Universities College of Medicine, Crystal Clinic, Akron, Ohio
  • 3Texas A&M University, Scott and White Clinic, Temple, Tex
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Publication History

Publication Date:
14 January 2010 (online)

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ABSTRACT

The 4-year outcomes of a prospective study of patients undergoing Triathlon total knee arthroplasty (TKA) are presented. There were 2035 consecutive cemented TKAs performed on 1688 patients. Mean follow-up was 21 months, including 713 knees with a follow-up of ≥2 years. In a subgroup of 239 patients, the coverage of the patella cut surface by the patella component was analyzed. To our knowledge, this is the first article to study this issue. Mean Knee Society pain scores improved from 48 to 96, function improved from 63 to 85, and range of motion improved from a mean of −5° to 104° to a mean of −2° to 126°. Coverage of the patella by the prosthesis was full from medial to lateral in 88% and full from proximal to distal in 91% of knees. The implant system has performed well within the follow-up period, with no implant- or design-related failures.