Periprosthetic joint infection (PJI) is among the most serious complications in the field of endoprosthetics. The number of PJIs is increasing worldwide and poses a real interdisciplinary challenge for everyone involved. For the patient concerned, it is necessary to promptly work out an adequate therapy solution to fight off the infection. Both the clinical experience of the surgeon and the proper diagnostic processes are prerequisite for the reliable detection and identification of an infection. The microbiologist is responsible for identifying the causative germs by screening the patient s synovial fluid and tissue samples. Based on the findings and subsequent resistance testing, the infectious disease specialist can recommend the appropriate antibiotic therapy. Furthermore, the clinical pharmacist is consulted regularly throughout the therapy to discuss the risk of potential drug interactions. The surgeon will proceed with the revision surgery, following defined algorithms.