Two-stage revision total knee arthroplasty with antibiotic-impregnated hydroxyapatite
Antibiotic-impregnated hydroxyapatite (HA) has been used as a new drug delivery system for the treatment of periprosthetic joint infection (PJI) of the knee. The aim of this study was to evaluate the clinical results of this treatment in patients with PJI. Methods: Fourteen consecutive cases of PJI of the knee who were scheduled to undergo two-stage knee revision were enrolled. In the first stage, all components were removed with thorough debridement, and antibiotic-impregnated HA was inserted
... ed HA was inserted in the bone and joint space. In the second stage, revision total knee arthroplasty ( TKA) was performed after eradication of infection. The mean period from removal of all components and treatment with antibiotic-impregnated HA to revision TKA was 3.4 months. Clinical and radiographic evaluations were performed after a mean follow-up of 5.1 years following revision TKA. Predictors of reinfection were evaluated. Results: Eleven patients had no recurrent infection, whereas 3 patients showed recurrent infection. No knees had osteolysis or loosening after revision TKA. The present study demonstrated no predictors for reinfection. Conclusion: Antibiotic-impregnated HA could be effective for the treatment of infected knee arthroplasty.