Kerbel YE, et al. - Investigators analyzed the data to study the cost-effectiveness of dilute betadine lavage for the prevention of infection in total hip arthroplasty (THA) as well as total knee arthroplasty (TKA). They evaluated the institutional records and the literature and obtained protocol costs, baseline infection rates following arthroplasty and average revision costs. If the initial infection rates of both TKA (1.10%) and THA (1.63%) had an absolute risk reduction (ARR) of 0.01%, then dilute (0.35%) Betadine lavage would be cost-effective at the institutional price of $2.54. They noticed a lower ARR as to be immediately cost-effective at a hypothetical lowest cost of $0.50.