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Objectives:  The objectives of the study was to compare the effectiveness of 1 day versus 3 days post-operative antibiotic prophylaxis in decreasing surgical site infection (SSI) rate after arthroplasty surgery.    Methods:  A prospective, randomized controlled trial was conducted over 1 year, in Cairo University Hospitals. The study included adult patients, who were scheduled for arthroplasty. Sixty patients were divided into two groups, 30 patients in each. The first group of patients received cefazolin for 1 day postoperatively (1-day group) and the other group for 3 days postoperatively (3-days group). Patients were randomized using the sealed opaque envelope method.    Results:  There were 32 females and 28 males. The mean patient age was 52 years (range 20–85 years). Wound infection developed in four cases (one case from the 1-day group and three cases from the 3-days group). All infections occurred within the early post-operative period, and completely resolved after proper management. Correlating the SSI to the type of surgery, operative time, the associated medical co-morbidities, and the duration of antimicrobial prophylaxis was not statistically significant.    Conclusion:  This study suggests that there is no significant difference in the prevalence of SSI between 1 day and 3 days of antimicrobial prophylaxis after primary joint arthroplasty within the average post-operative follow-up period of 3 months.

One day versus three days’ antibiotic prophylaxis in joint arthroplasty. A prospective randomized controlled trial