Althoff A, et al. - In this study, urinary self-catheterization was analyzed as a potential risk factor for postoperative complications following total hip (THA) and knee (TKA) arthroplasty procedures. Between 2005 and 2014, researchers distinguished self-catheterization patients who had undergone total joint arthroplasty (TJA) in a national insurance database. They estimated rates of death, hospital readmission, ER visit, infection, revision, and dislocation for THA or arthrofibrosis for TKA, as well as cost and length of stay (LOS). Then, they correlated self-catheterizing patients with a 4:1 matched control cohort applying a logistic regression analysis to control for confounding factors. This study enrolled a total of 69 individuals who had undergone THA and 128 patients who underwent TKA and who actively self-catheterized at the time of surgery. In this study, self-catheterization does not seem to be correlated with increased risk of major complications following TJA with the numbers available. in this patient population, reassurance can be given regarding concerns for infection and other complications following surgery.