Are Infection Rates Increased After Sterilization of the External Fixator During Staged Internal Fixation of High-Energy Tibial Plateau Fractures?

Abstract

To compare infection rates after second-stage definitive surgery for high-energy tibial plateau fractures between groups of patients who had the external fixator prepped into the surgical field and those who did not. Retrospective cohort study. Two academic Level 1 trauma centers. Two hundred forty-four patients met inclusion and exclusion criteria between the 2 institutions. Prepping of the external fixator into the surgical field during second-stage definitive open reduction and internal fixation. 162 patients were in the prepped group, and 82 patients were in the nonprepped group. The primary outcome was the rate of deep infection after definitive fixation. Secondary outcome was operative time. There were no significant differences in infection rates between prepped (11.7%) and nonprepped (18.3%) groups ( P = 0.162). Patients in the prepped groups had significantly decreased operative time (168.2 minutes vs. 221.9 minutes, P < 0.001) even after controlling for confounders in regression analysis. There is no increased risk of infection associated with prepping and maintenance of the external fixator during definitive internal fixation for high-energy tibial plateau fractures. These data suggest that this practice may lead to shorter operative times as well. Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.