Cerclage Wires Used for Extended Trochanteric Osteotomy Fixation During Two-Stage Revision Total Hip Arthroplasty for Periprosthetic Joint Infection Are Not Colonized by Bacteria: A Case Series.

Background: Eradication of infection after total hip arthroplasty (THA) is particularly challenging. The aim was to evaluate whether cerclage wires, used to stabilize an extended trochanteric osteotomy (ETO) in patients undergoing two-stage revision THA for infection, become colonized with bacteria. The findings could help discern whether cerclage wires should be systematically exchanged during the second surgery to reduce the risk of persistent infection. Methods: Patients were included in the study if they had undergone two-stage revision THA for infection, that required stem removal using an ETO, and the cerclage wires had been exchanged during the second-stage procedure. The cohort comprised a consecutive series of 28 patients, 14 females and 14 males, aged 67.9 ± 13.1 years with a body mass index of 29.8 ± 6.6 kg/m Results: Twenty-six of the 28 patients were available for bacterial testing following the second-stage procedure. Sonication of the cerclage hardware revealed one case of bacterial contamination and no cases of bacterial colonization. Furthermore, sonication of the spacer revealed one case of bacterial contamination and no cases of bacterial colonization. Conclusions: Cerclage wires used for fixation of ETO during two-stage revision THA for infection are not colonized by bacteria, suggesting that it may not be necessary to systematically exchange them during the second-stage procedure. Further studies with larger cohort sizes are necessary to confirm these findings.