| Summary: | <p class="p p-first-last" id="__p2">The aim of our study was to evaluate the effectiveness of debridement, antibiotics, irrigation and retention (DAIR) in patients who developed a periprosthetic joint infection (PJI) after primary hip or knee arthroplasty in two community hospitals in the Netherlands. We retrospectively collected data in two hospitals in the Netherlands on all episodes of PJI after primary hip (THA) and knee arthroplasty (TKA) from 1998-2012. In 109 of 8234 THA (1.32%) and 65 of 5752 TKA (1.13%) a PJI developed. DAIR was used as treatment in 84 patients after THA (77.1%) and 56 patients after TKA (86.2%). 34 Patients only received antibiotics or were immediately revised. After 1 year follow-up, prosthesis retention was achieved in 81 THA patients (74.3%) and 48 TKA patients (73.8%). Acute infections showed a better survival compared to late infections (84.0% vs 46.6% respectively; p<0.01). Furthermore, a young age was associated with an increased revision risk (p<0.01)<em>.</em> In conclusion, debridement, antibiotics and irrigation in acute PJI may lead to retention of the prosthesis in a majority of cases. Large patient cohort studies can provide data on PJI outcome, complementing National Registries which have limited detail.</p>
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