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FEMS Immunol Med Microbiol. 2012 Jul;65(2):158-68. doi: 10.1111/j.1574-695X.2012.00938.x. Epub 2012 Mar 15.

Pathogenesis and treatment concepts of orthopaedic biofilm infections.

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1
Basel University Medical Clinic, Kantonsspital, Liestal, Switzerland. werner.zimmerli@unibas.ch

Abstract

Implant-associated infection is caused by surface-adhering bacteria persisting as biofilm. Periprosthetic joint infection is difficult to diagnose and treat. The high susceptibility of implanted devices to infection is because of a locally acquired host defense defect, and persistence is mainly because of the rapid formation of a biofilm resistant to host defense and antimicrobial agents. Successful treatment of periprosthetic joint infection requires the optimal surgical procedure combined with long-term antimicrobial therapy directed against surface-adhering microorganisms. Surgical treatment according to an algorithm has been validated in several observational studies. The role of rifampin against device-associated staphylococcal infection has been evaluated in an animal model, in observational studies and in a controlled trial. Given the limited efficacy of traditional antibiotics in implant-associated infections, novel strategies such as coating of the device, vaccination against biofilms, and quorum-sensing inhibitors are promising future options for prevention and treatment.

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