Purpose: To evaluate different concentrations of ciprofloxacin to prevent infection after open fracture contaminated with S. aureus in rats using absorbable local delivery system.
Methods: Fifty-two Wistar rats were assigned to six groups. After 4 weeks, all animals underwent 99mTc-ceftizoxima scintigraphy evaluation, callus formation measurement and histological analysis. ANOVA, t-Student and Kruskal Wallis were used for quantitative variables statistical analysis, whereas qui square and exact Fisher were used for qualitative variables.
Results: Treatment using 25% and 50% of ciprofloxacin incorporated at the fracture fixation device were effective in preventing bone infection compared to control group (p<0.05). Chitosan were not effective in preventing bone infection when used alone compared to control group (p>0.05). Histological findings demonstrated bone-healing delay with 50% of ciprofloxacin. No difference in callus formation were observed (p>0.05).
Conclusion: Local delivery treatment for contaminated open fracture using chitosan with ciprofloxacin is effective above 25%.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7478494 | PMC |
| http://dx.doi.org/10.1590/s0102-865020200080000003 | DOI Listing |
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