CLinical Evaluation of ANtiseptic Skin Preparation in Revision Total Joint Arthroplasty of the Hip and Knee

In this trial, participants will be assigned randomly to have their surgical skin site prepared for surgery with either chlorhexidine gluconate-alcohol solution or povidone-iodine solution. These are two types of solutions that have antiseptic properties, which means they help eliminate harmful bacteria on the skin at the time of surgery, and therefore, reduce the risk of infection. Surgeons routinely use either chlorhexidine-based or iodine-based skin preparation solutions at the time of surgery to sterilize the surgical area. However, we don't know which one works best for patients having revision joint replacement surgery. There is a small chance of having an allergic reaction to the chlorhexidine or iodine, but there is no additional risk by participating in this study, as these skin preparation solutions are routinely used in practice. The main outcome of interest is the need for re-operation for a wound complication or an infection of the prosthetic joint within one year after surgery. Other key outcomes are surgical site infection, mortality, and readmission to hospital. Participants will be contacted 30 days after surgery to complete a survey online, by phone, or in person, which will take approximately 5 minutes to complete. All other outcome data will be collected by phone call, health records, routine hospital monitoring, or electronic registry data at thirty days and one year after surgery.