Ross D, et al. - Through a review of all 205,152 TKAs carried out in the province of Ontario, Canada, between 2003 and 2016, researchers determined temporal trends and predictors of 30-day readmissions and emergency department (ED) visits after TKA. An important rise in ED visits after TKA in Ontario between 2003 and 2016, with no corresponding rise in hospital readmissions irrespective of a meaningful temporal trend toward the shorter length of stay, was noted. Predictors of ED visits and readmissions were comparable, including male gender, lower-income, greater comorbidities and lacking a primary care physician visit postoperatively. Elevated rates of ED visits after TKA in Ontario represent a quality problem, as they are correlated with increased cost to the public healthcare system without any substantial advantage. Interventions targetted at redirecting patients from the ED for minor postoperative concerns should be examined, as this is likely to enhance care by decreasing costs, enhancing efficacy and improving the patient experience.