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- W2469049262 abstract "Introduction: Similar local infection prophylaxis as in cemented total joint by antibiotic-loaded bone cement has not been possible yet for cementless prostheses. In this study, a gentamicin-coating which can be brought additionally onto standard hydroxyapatite (HA) coatings of cementless prostheses is presented. It was tested whether this gentamicin-coating can reduce infection rates in a rabbit infection model with Staphylococcus aureus compared to compared to standard-HA coating. Furthermore, the biocompatibility of this gentamicin coating was investigated. Materials and Methods: Staphylococcus aureus with a dose of 10(7) CFUs was inoculated into the intramedullary canal of the tibia of 30 rabbits followed by the implantation of standard hydroxyapatite (HA) K-wires, K-wires coated with a HA--gentamicin combination, and K-wires coated with a HA-RGD-gentamicin combination, respectively. The animals were sacrificed after 28 days and clinical, histological and microbiological assessment on the bone and on the removed K-wire itself by agar plating and DNA-pulse field gel electrophoresis were carried out to detect infection. Infection was defined as positive culture growth from the bone and/or cement samples. In another study with 40 rabbits biocompatibility of the two gentamicin-coating types was assessed after an implantation time of 12 weeks and compared to pure HA-coating and uncoated implants. Results: Infection rates were 88% (7 of 8 animals) for the standard HA, 0% (0 of 9 animals) for the HA-gentamicin and 0% (0 of 10 animals) for the HA-RGD-gentamicin group. There was a statistically highly significant reduction of infection rates by both gentamicin-coating types compared to standard HA-coating (p Conclusion: Both gentamicin-coating types showed significant improvement of infection prophylaxis compared to standard HA coating. Furthermore, both gentamicin coating types revealed good biocompatibility after 12 weeks. Therefore, HA-gentamicin and HA-RGD-gentamicin coatings could help to reduce infection rates in cementless arthroplasty in all day clinical use" @default.
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- W2469049262 date "2009-03-01" @default.
- W2469049262 modified "2023-09-27" @default.
- W2469049262 title "GENTAMICIN-HYDROXYAPATITE-COATING FOR CEMENTLESS PROSTHESES SHOWS SIGNIFICANT REDUCTION OF INFECTIONS AND GOOD BIOCOMPATIBLITY IN A RABBIT MODEL" @default.
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