Reddy NC, Prentice HA, Paxton EW, et al. - The present study was conducted to correlate the risk of complications and catastrophic events for same-day and inpatient stay total hip arthroplasty (THA). Researchers performed a cohort study applying a US healthcare system’s total joint replacement registry. Between 2017 and 2018, primary elective THA were distinguished. The risk for 90-day incident events, including emergency department visit, unplanned readmission, cardiac complication, deep infection, venous thromboembolism, and mortality, by the in-hospital length of stay: same-day versus 1-2-night inpatient stay were evaluated by applying Propensity score-weighted Cox proportional hazards regression. For this analysis, 13,646 THA were included, 6,033 (44.1%) with a same-day discharge. A lower or no difference was found in risk for complications and catastrophic events following same-day THA compared to an inpatient stay. The outcomes suggested that catastrophic events were more likely to occur early in the 90-day period, but an inpatient stay did not preclude this risk.