Abstract
BackgroundThe required duration of antibiotic treatment for prosthetic joint infections (PJI) with debridement and retention of the implant (DAIR procedure) is unknown. MethodsMulticenter retrospective study emphasizing the duration of antibiotic therapy in patients treated with by DAIR. ResultsWe included 87 hip or knee PJI episodes in 87 patients from three university hospitals in France and Switzerland. All debridements were performed within 3 weeks of symptom onset. After a mean follow-up of 52.1 months, 60 patients with PJI (69%) remained in remission, with no significant difference between hip and knee cases (73.3% vs. 59.3%, 95% confidence interval (CI), 0.20–1.38), or between patients receiving 6 compared with 12 weeks of antibiotic treatment (70.5% vs.67.4%, 95%CI 0.27–2.10, p=0.60). Methicillin-resistant Staphylococcus aureus was isolated from 13.8% of infections and this was the only variable associated with a poorer outcome (remission in 41.7% vs. 73.3% for those with other pathogens, 95%CI 0.05–0.77, p=0.02). ConclusionsIn patients undergoing DAIR for hip or knee PJI, the likelihood of long-term remission was not significantly different for those receiving 6 versus 12 weeks of antibiotic therapy. Prospective randomized trials are required to confirm this observation.
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