20-Year Minimum Outcomes and Survival Rate of High-Flexion Versus Standard Total Knee Arthroplasty

Young Hoo Kim, Jang Won Park, Young Soo Jang

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Background: There are conflicting reports of early and mid-term results of the high-flexion total knee arthroplasties (TKAs). The purpose of the present long-term follow-up study was to determine the long-term (minimum 20 years) clinical and radiographic and CT scan results, and the survival rates of high-flexion versus standard TKAs. Methods: Ninety-five patients (190 knees) were included (mean age, 65 ± 6.5 years). The mean follow-up was 20.3 years (range, 20 to 20.6 years). Results: Revision of the TKA was performed in 5 knees (5.2%) with high-flexion TKA and in 3 knees (3.2%) with standard TKA. The rate of survival at 20 years was 94.8% (95% CI, 91%-98%) in the high-flexion TKA group and 96.8% (95% CI, 92%-100%) in the standard TKA group with reoperation for any reason. No knee had osteolysis in either group. Conclusions: At this length of follow-up, high-flexion TKA has comparable outcomes and survivorship to standard TKA.

Original languageEnglish
Pages (from-to)560-565
Number of pages6
JournalJournal of Arthroplasty
Issue number2
StatePublished - Feb 2021

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Inc.


  • high-flexion total knee arthroplasty
  • long-term outcome
  • osteolysis
  • standard total knee arthroplasty
  • survival rate


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