ArticleFoot & ankle orthopaedics2025
Chronic Kidney Disease Severity and 30-Day Outcomes After Total Ankle Arthroplasty: An NSQIP Study.
Article in Foot & ankle orthopaedics, 2025. 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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Abstract
Background: Chronic kidney disease (CKD) is a recognized risk factor for adverse outcomes in total hip and knee arthroplasties; however, its impact on total ankle arthroplasty (TAA) outcomes is limited. This study investigates the association between CKD severity and 30-day postoperative outcomes following TAA. Methods: We analyzed the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database for primary TAAs between 2006 to 2021. Estimated glomerular filtration rate (eGFR) was calculated, categorizing patients into CKD stages. Univariable analysis assessed associations between eGFR categories, demographic characteristics, and outcomes. Multivariable regression models were used to identify predictors of hospital length of stay, unplanned return to the operating room, and overall complications. Results: Of the 1678 eligible primary TAA cases, 675 were G1, 806 G2, 136 G3a, 50 G3b, 7 G4, and 4 G5. Significant differences across eGFR categories were found for age, sex, race, anesthesia type, diabetes, hypertension, postoperative dialysis, American Society of Anesthesiologists class, blood urea nitrogen, creatinine, white blood cell count, and hematocrit. The overall complication rate was 3% (53/1678). Rates of myocardial infarction, unplanned return to surgery, and hospital length of stay differed significantly among eGFR groups. Multivariable negative binomial regression identified predictors of longer hospital stay including age 80-89 years, male sex, American Indian / Alaska Native race, unknown race, partial functional dependency, monitored anesthesia care/intravenous sedation, insulin-dependent diabetes, greater or equal to 2 direct complications, and 1 indirect complication. Notably, CKD stage G3b was associated with significantly longer stays compared with G1. Logistic regression revealed that 1 or greater or equal to 2 direct complications and CKD stages G4+G5 significantly predicted unplanned return to surgery. Smokers experienced higher overall complication rates. Conclusion: In this retrospective observational study, we found that CKD severity significantly impacts postoperative outcomes following TAA, with advanced stages linked to prolonged hospital stays and increased risk of unplanned return to surgery. Level of Evidence: Level III, retrospective cohort series.
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