Controlled release of vancomycin from thin sol-gel films on implant surfaces successfully controls osteomyelitis

Document Type

Article

Publication Date

2009

Abstract

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. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.

Publication Title

Journal of Orthopaedic Research

Volume

27

Issue

6

First Page

701

Last Page

709

Comments

This article was published in Journal of Orthopaedic Research, Volume 27, Issue 6, Pages 701-709.

The published version is available at http://dx.doi.org/10.1002/jor.20815.

Copyright © 2009.

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