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Two patients were excluded from the study (no second stage). Of the remaining twelve patients,only one patient had persistent infection after the first stage; eleven patients received asuccessful re-implantation at the second-stage, and were followed for a mean of 18 months(range 3 months to 33 months).The diagnoses at the index operation in cases with infected arthroplasty are shown in Table 2Table 2 Index operation diagnosesDiagnosis N percentOsteoarthritis 5 62.5Fracture 2 25Avascular necrosis 1 12.5Total 8 100All the fourteen patients showed positive growth on extended cultures of intraoperativespecimens taken during the first-stage. Staphylococcus aureus was the most frequent infectingorganism found in 8 patients (72.72%) of 11 patients with positive preoperative culturespecimens; and in 10 patients (71.42%) of 14 patients with positive intraoperative culturespecimens. Staphylococcus epidermis was the second most common pathogen found in 3patients (21.4%) of 14 patients with positive intraoperative culture specimens and polymicrobialin one patient (7.14%) (Table 3)Table 3 Pathogens confirmed after first stagefile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]