On this 10thepisode of the JAAOS Unplugged podcast series, host Andy Jensen, MD, summarizes three research articles from the October 15, 2019 issue of JAAOS: Blood Transfusion Trends in Primary and Revision Total Joint Arthroplasty: Recent Declines Are Not Shared Equally, Utilization of Drains and Association with Outcomes: A Population-Based Study Using National Data on Knee Arthroplasties, and Stem Cells and Platelet-rich Plasma for Knee Osteoarthritis: Prevalence and Cost in South Florida.     Following the article summaries, Dr. Jensen interviews Michael Flierl, MD to discuss his review article titled “Evaluation of the Painful Total Knee Arthroplasty”   Follow this link to download these and other articles from the October 15th, 2019 issue of JAAOS: https://journals.lww.com/jaaos/toc/2019/10150   The JAAOS Unplugged podcast series is brought to you by the Journal of the American Academy of Orthopaedic Surgeons and the AAOS Resident Assembly.