Lower risk of revision in fixed-bearing compared to mobile-bearing total ankle arthroplasties: A register based evaluation of 1246 patients in the Netherlands

Marije C. Vink*, Liza N. van Steenbergen, Bas de Hartog, Wierd P. Zijlstra, Tom M. van Raaij, Rinne M. Peters

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    Abstract

    Background: Total ankle arthroplasty (TAA) has been developed as treatment for disabling tibiotalar osteoarthritis. TAAs are divided into mobile- and fixed-bearings. The aim was to determine the incidence and trends of fixed- and mobile bearings over time and investigate the association of bearing type and risk of revision after primary TAA in the Netherlands.

    Methods: Using data from the Dutch Arthroplasty Register (LROI) (2014–2023), we analyzed trends in use of bearing type, reasons for revision and implant survival (n = 1246).

    Results: Fixed bearings were more often used than mobile bearings (67 % versus 33 %). Revision risk at 3, 5 and 7 years was respectively 2.8 %, 3.3 %, and 5.4 % for fixed bearings, versus 6.5 %, 10.4 %, and 11.3 % for mobile bearings. The adjusted hazard ratio was 2.5 (95 %CI 1.4–4.4) for mobile bearings.

    Conclusion: Fixed bearings were associated with a lower revision risk than mobile bearings in total ankle arthroplasties based on Dutch registry data.

    Original languageEnglish
    JournalFoot and Ankle Surgery
    DOIs
    Publication statusE-pub ahead of print - 13-Dec-2024

    Keywords

    • Fixed bearing
    • Mobile bearing
    • Revision risk
    • Total ankle arthroplasty

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