Journal
JOURNAL OF ORTHOPAEDIC RESEARCH
Volume 22, Issue 1, Pages 39-43Publisher
WILEY
DOI: 10.1016/S0736-0266(03)00152-9
Keywords
biofilms; animal models; inoculation; silver; implants
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This study describes a new model of biofilm study in rabbits. The primary focus of this study was to assess biofilm adhesion to orthopaedic metals in their first 48 It in a femoral intramedullary implantation model. Two previous inoculation methods i.e. that of pre- and direct inoculation were studied with two bacterial isolates namely Staphylococcus aureus and epidermidis, on titanium and stainless steel metallic implants. A method of sonication and log dilution/plating was used to assess biofilm bacteria adhering to implants. Silver coated metals were then compared with their respective control metals in the new model. The direct inoculation model gave larger and more reproducible biofilm adhesion to implanted metals. Staphylococcus epidermidis shows lower adhesion ability to metals, and biofilms adhere in greater numbers to stainless steel over titanium. Silver coated metals show no statistical difference over control metals when exposed to orthopaedic biofilms. (C) 2003 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.
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