Reevaluating the Need for Antibiotic Prophylaxis in Adult Upper Extremity Surgery With Hardware.

Background: Although it is well established that antibiotic prophylaxis is not needed in soft tissue upper extremity cases, there is still no definitive consensus when hardware implantation is involved. We hypothesize that antibiotic prophylaxis is not necessary and there is no difference in postoperative surgical site infection rates regardless of preoperative antibiotic administration.

Methods: A retrospective cohort analysis was performed on upper extremity surgical cases with hardware implantation performed at a single institution amongst 5 hand surgeons between November 2021 and November 2023. Implants included plates, screws, Kirschner wires, and suture anchors. Primary outcome measures were diagnosis of surgical site infection by 14 and 30 days postoperatively. Secondary outcomes included the type of management used to treat infection. Categorical variables were compared using Fisher exact test, and continuous variables were compared using Wilcoxon rank-sum test.

Results: A total of 232 patients were included for analysis-152 received antibiotic prophylaxis and 80 did not. There were no differences between the 2 groups in terms of demographic factors, comorbidities, or smoking status. There was no difference in infection rates between the group who received antibiotic prophylaxis and the group who did not. Infection rate in the antibiotic prophylaxis group was 4.6% and in the sans antibiotics group was 2.5%. All infections were treated with antibiotics, and there were no differences in the rates of operative washout and hardware removal between the 2 groups.

Conclusions: Antibiotic prophylaxis is not necessary in upper extremity surgical cases even when implantation of hardware is involved.