The association between bearing type and implant survival after primary total ankle arthroplasty (TAA): an evaluation of Dutch and Australian registry data.
Approval date: November 25th 2025
RM Peters, M. Vink, W Zijlstra, L van Steenbergen, P Stavrou, T van Raaij
Research proposal abstract
Total ankle arthroplasty (TAA) as it is currently performed, is the result of gradual developments in implant materials, biomechanical concepts and surgical techniques. Ankle prostheses are typically categorized within generations based on changes in implant design and operation techniques. TAAs are divided into mobile- and fixed-bearing prostheses. In our previous study (Vink et al. 2024) we evaluated the association of bearing type and implant survival using LROI data from 2014 to 2023. In this study we aim to combine the Dutch data with data of the Australian registry.
We aim to determine the association between bearing type (fixed versus mobile) and risk of revision after primary TAA, based on Dutch and Australian registry data.
First, we will compare the data from both countries, show (differences in) case-mix, use (trend) of bearings over time, and reasons for revision for fixed and mobile bearings.
Revision risk of fixed and mobile bearings will be compared using the merged data from both registries.