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Despite advances in sterile techniques and evidence-based use of perioperative antibiotics, periprosthetic joint infections still occur in 1% of primary and 3% to 7% of revision total joint arthroplasties. But a “smart” antimicrobial polymer coating, described in the July 20, 2016 Journal of Bone & Joint Surgery, has great potential to cut those percentages.
Stavrakis et al. devised a nontoxic, biodegradable polymer coating (called PEG-PPS for short) that locally delivers antibiotics (vancomycin and tigecycline in this study) both passively and actively, with the active release initiated by the presence of bacteria.
The authors tested the efficacy of the coating both in vitro and in vivo.
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