Javad Parvizi, MD, FRCS, Professor of Orthopaedic Surgery at Jefferson University and the Rothman Institute in Philadelphia discusses the assessment of periprosthetic joint infection. He talks about how he got interested in this field, why it is important, misconceptions held by many surgeons, how recent research is helping us better diagnose prosthetic joint infections, and his own tips for for assessing the patient with a suspected joint infection.