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Abstract
Background and purpose — Previous studies have found different outcomes after revision of knee arthroplasties performed after high tibial osteotomy (HTO). We evaluated the risk of revision of total knee arthroplasty with or without previous HTO in a large registry material.
Patients and methods — 31,077 primary TKAs were compared with 1,399 TKAs after HTO, using Kaplan-Meier 10-year survival percentages and adjusted Cox regression analysis.
Results — The adjusted survival analyses showed similar survival in the 2 groups. The Kaplan-Meier 10-year survival was 93.8% in the primary TKA group and 92.6% in the TKA-post-HTO group. Adjusted RR was 0.97 (95% CI: 0.77–1.21; p = 0.8).
Interpretation — In this registry-based study, previous high tibial osteotomy did not appear to compromise the results regarding risk of revision after total knee arthroplasty compared to primary knee arthroplasty.
MB, AMF, and OF designed the study. MB, AMF, LIH, and OF collected and analyzed the data. MB wrote the manuscript, which was edited by all the authors.
There was no external funding and there were no competing interests. The NAR is financed by the Regional Health Board of Western Norway. We thank the Norwegian orthopedic surgeons for excellent reporting to the NAR.