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Bone & Joint Research
Vol. 3, Issue 6 | Pages 187 - 192
1 Jun 2014
A versatile model of open-fracture infection
Penn-Barwell JG Rand BCC Brown KV Wenke JC
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Objectives

The purpose of this study was to refine an accepted contaminated rat femur defect model to result in an infection rate of approximately 50%. This threshold will allow examination of treatments aimed at reducing infection in open fractures with less risk of type II error.

Methods

Defects were created in the stablised femurs of anaethetised rats, contaminated with Staphylococcus aureus and then debrided and irrigated six hours later. After 14 days, the bone and implants were harvested for separate microbiological analysis. This basic model was developed in several studies by varying the quantity of bacterial inoculation, introducing various doses of systemic antibiotics with and without local antibiotics.

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