LAUSR

Empiric antibiotic therapy in suspected prosthetic joint infection should cover likely pathogens while avoiding overly broad‐spectrum antibiotics. We analysed individual patient data from a large prospective cohort study (Prosthetic Joint Infection in Australia and New Zealand, Observational (PIANO)) and found that causative organisms vary with the presentation type, with early post‐operative infections more likely to be polymicrobial (41%) compared with late acute infections (10%). We thus propose empirical regimens tailored to the presentation type and presence or absence of sepsis.