Abstract
Purpose
Total ankle arthroplasty (TAA) and ankle arthrodesis (AA) are the main surgical treatment options for end-stage ankle arthritis. Although the superiority of each modality remains debated, there remains a lack of high-quality evidence-based studies, such as randomized controlled clinical trials, and meta-analyses of comparative studies. We performed a meta-analysis of comparative studies to determine whether there is a significant difference between these two procedures in terms of (i) clinical scores and patient satisfaction, (ii) re-operations, and (iii) complications.
Methods
We conducted a comprehensive search in the MEDLINE, EMBASE, and Cochrane library databases. Only retrospective or prospective comparative studies were included in this meta-analysis. The literature search, data extraction, and quality assessment were conducted by two independent reviewers. The primary outcomes were clinical scores and patient satisfaction. We also investigated the prevalence of complications and the re-operation rate.
Results
Ten comparative studies were included (four prospective and six retrospective studies). There were no significant differences between the two procedures in the American Orthopaedic Foot and Ankle Society ankle–hindfoot score, Short Form-36 physical component summary and mental component summary scores, visual analogue scale for pain, and patient satisfaction rate. The risk of re-operation and major surgical complications were significantly increased in the TAA group.
Conclusions
The meta-analysis revealed that TAA and AA could achieve similar clinical outcomes, whereas the incidence of re-operation and major surgical complication was significantly increased in TAA. Further studies of high methodological quality with long-term follow-up are required to confirm our conclusions.
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Hyun Jung Kim and Dong Hun Suh contributed equally to this work as co-first authors.
Appendix 1
Appendix 1
Search Protocol. An electronic literature search was performed by using the Medline, EMBASE, and Cochrane library databases. Keywords were selected based on the Cochrane acronym and PICO (Population, Intervention, Comparator, Outcome) format of the research question. The following keywords were used along with the Boolean search function: ankle, arthroplasty, arthrodesis, ankle replacement, and ankle fusion.
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Kim, H.J., Suh, D.H., Yang, J.H. et al. Total ankle arthroplasty versus ankle arthrodesis for the treatment of end-stage ankle arthritis: a meta-analysis of comparative studies. International Orthopaedics (SICOT) 41, 101–109 (2017). https://doi.org/10.1007/s00264-016-3303-3
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DOI: https://doi.org/10.1007/s00264-016-3303-3