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Categories: Abstracts, 2022, Podium

Clinical and radiographic outcomes of revision total ankle arthroplasty using the INBONE II prosthesis

B. Jamjoom, B. Siddiqui, H. Salem, M. Raglan, S. Dhar

¹Nottingham University Hospitals, Foot and Ankle Unit, Nottingham, United Kingdom

Background: The literature on the outcome of revision total ankle arthroplasty (TAA) remains limited. We aim to report the clinical and radiological outcomes of revision TAA at a high-volume centre in the UK.

Methods: Retrospective review of 28 patients that underwent 29 revision TAA procedures using INBONE II prosthesis. Demographic, radiological, and patient reported outcome measures data were analysed.

Results: The mean (range) duration from primary TAA to revision was 87.5 (16-223) months.The main indication for the revision was aseptic loosening of the primary TAA (82.8%). Additional procedures were required in 75.9% of patients. At mean (range) follow-up of 40 (24-60) months, the infection, re-operation, and implant survival rates were 6.9%, 6.9% and 96.5% respectively. A significant postoperative improvement in the component alignment radiographic measures was observed. Osteolysis,subsidence, loosening and heterotopic ossification rates were comparable to other reports and did not influence the clinical outcome. A significant improvement was observed in the MOXFQ (all domains) and the EQ-5D (three domains) at 24 months postoperatively.

Conclusions: Revision TAA using INBONE II was associated with good short-term survival and improvement in the postoperative scores at 2 years. Maintenance of the postoperatively improved alignment was documented at follow up. The relatively high survival rate in this series supports the notion that revision TAA is a satisfactory option for failed primary TAA.

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Tags: Ankle TAR

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