Controlled release of vancomycin from thin sol-gel films on implant surfaces successfully controls osteomyelitis
Peri-prosthetic infection remains a serious complication of joint replacement surgery. Herein, we demonstrate that a vancomycin-containing sol-gelfilm on Ti alloy rods can successfully treat bacterial infections in an animal model. The vancomycin-containing sol-gel films exhibited predictable release kinetics, while significantly inhibiting S. aureus adhesion. When evaluated in a rat osteomyelitis model, microbiological analysis indicated that the vancomycin-containing sol-gel film caused a profound decrease in S. aureus number. Radiologically, while the control side showed extensive bone degradation, including abscesses and an extensive periosteal reaction, rods coated with the vancomycin-containing sol-gel film resulted in minimal signs of infection. mCT analysis confirmed the radiological results, while demonstrating that the vancomycin-containing sol-gel film significantly protected dense bone from resorption and minimized remodeling. These results clearly demonstrate that this novel thin sol-gel technology can be used for the targeted delivery of antibiotics for the treatment of periprosthetic as well as other bone infections. Â© 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.
Journal of Orthopaedic Research
Adams, Christopher S.; Antoci, V. Jr.; Harrison, G.; Patal, P.; Freeman, T. A.; Shapiro, I. M.; Parvizi, J.; Hickok, N. J.; Radin, S.; and Ducheyne, P., "Controlled release of vancomycin from thin sol-gel films on implant surfaces successfully controls osteomyelitis" (2009). PCOM Scholarly Papers. 1541.