Singh JA, et al. - A retrospective cohort study was designed to evaluate whether acute kidney injury (AKI) is correlated with more complications and higher healthcare utilization in people undergoing primary total hip arthroplasty (THA). A multivariable-adjusted logistic regression of the 1998–2014 US National Inpatient Sample data was performed to evaluate the relationship of AKI with complications (infection, transfusion, revision, and mortality) and healthcare utilization (total hospital charges, discharge to a rehabilitation facility, length of hospital stay) post-THA. Researchers estimated the odds ratio (OR) and 95% confidence intervals (CI). The study demonstrated that quality enhancement initiatives with optimization of the peri-operative care to decrease AKI and subsequently AKI-associated complications and healthcare utilization are required. Mechanisms of AKI-associated post-THA complications require future investigation.