Hernandez NM, Buchanan MW, Seyler TM, et al. - This study was intended to characterize 1.5-stage exchange arthroplasty as placing an articulating spacer with the intent to last for a prolonged time. Researchers conducted a retrospective review between 2007 and 2019 to assess patients treated with 1.5-stage exchange arthroplasty for total knee arthroplasty (TKA) periprosthetic joint infection (PJI). They included 31 knees with a mean age of 63 years, mean BMI 34.4 kg/m ², 12 were female, with a mean clinical follow-up of 2.7 years. The results of this study demonstrated that 1.5-stage exchange arthroplasty may be a reasonable method to treat TKA PJI. There was an acceptable rate of infection recurrence and implant durability at a mean follow-up of 2.7 years.