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The antimicrobial properties and the elution characteristics of gentamicin-vancomycin-loaded hip spacers were studied in vivo and in vitro. Vancomycin elution was greater than gentamicin elution. The antibiotic concentrations in vivo were less than those in vitro. Not dependent on implantation duration, growth inhibition by spacers in vitro was observed for 2 weeks. The reason for protracted wound healing cannot be insufficient antibiotic release.
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Kelm et al. (2005) studied this question.
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