Observational studyActa orthopaedica2026
Association between superficial surgical site infection and revision after primary total hip arthroplasty: a cohort study of 3,242 patients.
Observational study in Acta orthopaedica, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
Funding
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Abstract
background and purposeWe aimed to evaluate whether a superficial surgical site infection (SSI) after primary total hip arthroplasty (THA) is associated with an increased risk of subsequent revision hip arthroplasty for any cause.
methodsThis is a single-center, observational study based on data from the Norwegian Arthroplasty Register (NAR) and the local infection surveillance program. All patients operated on with a primary THA at our institution from January 1999 through December 2019 were eligible for the study. The risk of revision surgery for any cause was compared between the exposed (superficial SSI) and the unexposed group (no SSI) with frequentist (Cox regression) and Bayesian survival analysis.
results3,242 patients were included in the study. Median follow-up in the NAR was 7, minimum follow-up was 4 years. 27 patients were registered with a superficial SSI. A Cox regression analysis adjusted for sex, age, American Society of Anesthesiologists Physical Status (ASA) class, duration of surgery, and year of surgery gave an adjusted hazard ratio of 1.4 (95% confidence interval: 0.3-5.9, P = 0.6) for the risk of revision for any cause in the exposed group (superficial SSI) compared with the unexposed group (no SSI). A Bayesian survival model, adjusted for the same covariates, gave a censored time coefficient of 0.5 (95% credible interval: 0.1-0.9), with a corresponding very low (1%) probability of an increased risk of revision for any cause in the exposed group.
conclusionWe showed no association between superficial SSI and revision after primary THA. Thus, our data does not support the dogma that superficial SSIs after primary THA do not exist.
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