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Abstract
We conducted a nationwide population-based cohort study to identify the risk factors associated with failure of total ankle arthroplasty (TAA). We included 2,914 subjects who underwent primary TAA between January 1, 2010, and December 31, 2016, utilizing the database of the Korean National Health Insurance Service. Failure of TAA was defined as revision TAA or arthrodesis procedures. An increased risk of TAA failure was observed in the < 65 age group versus the ≥ 75 age group [adjusted hazard ratios (aHR) 2.273, 95% confidence interval (CI) 1.223–4.226 in the 60–64 age group; aHR 2.697, 95% CI 1.405–5.178 in the 55–59 age group; aHR 2.281, 95% CI 1.145–4.543 in the 50–54 age group; aHR 2.851, 95% CI 1.311–6.203 in the < 50 age group]. Conversely, the ≥ 65 age group displayed no increase in the risk of TAA failure. The risk of TAA failure was increased in the severely obese group with body mass index (BMI) of ≥ 30 kg/m2 versus the normal BMI group (aHR 1.632; 95% CI 1.036–2.570). This population-based longitudinal study demonstrated that age < 65 years and BMI of ≥ 30 kg/m2 were associated with increased risk of TAA failure.
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1 Korea University Ansan Hospital, Department of Orthopaedic Surgery, Ansan-si, Republic of Korea (GRID:grid.411134.2) (ISNI:0000 0004 0474 0479)
2 Soongsil University, Department of Statistics and Actuarial Science, Seoul, Republic of Korea (GRID:grid.263765.3) (ISNI:0000 0004 0533 3568)
3 Yonsei University, Department of Orthopaedic Surgery, College of Medicine, Seoul, Republic of Korea (GRID:grid.15444.30) (ISNI:0000 0004 0470 5454)
4 Korea University Guro Hospital, Department of Orthopaedic Surgery, Seoul, Republic of Korea (GRID:grid.411134.2) (ISNI:0000 0004 0474 0479)