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- W2030485066 abstract "Abstract Reconstituted keratin has shown promise as an orthopaedic biomaterial. This in vivo study investigates the biological response of composite materials prepared from reconstituted keratin containing a high content of hydroxyapatite (HA) (40 wt % HA), implanted for up to 18 weeks in the long bones of sheep. Keratin–HA composites were compared with a commercially available polylactic acid (PLA) HA composite (BIO RCI HA®, Smith and Nephew). Porous keratin–HA materials displayed excellent biocompatibility and osseointegration, with full integration into bone by 12 weeks. Dense keratin–HA materials also showed excellent biocompatibility, with a more limited osseointegration, involving the penetration of new bone into the periphery of the implant after eight weeks. In contrast, the PLA–HA implant did not integrate with surrounding tissue. Microindentation showed that porous keratin–HA implants were initially soft, but became stiffer as new bone penetrated the implant from four weeks onwards. In contrast, although the initial rigidity of dense keratin–HA composites was maintained for at least two weeks, the implant material weakened after four weeks. The PLA–HA implant maintained its physical properties throughout the course of the trial. This study demonstrates the increased osseointegration/osteoconduction capacity of keratin–HA composites and provides further evidence supporting the suitability of keratin‐based materials, such as bone graft substitutes and soft tissue fixation devices. © 2010 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2010." @default.
- W2030485066 created "2016-06-24" @default.
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- W2030485066 date "2010-09-28" @default.
- W2030485066 modified "2023-10-16" @default.
- W2030485066 title "Keratin-hydroxyapatite composites: Biocompatibility, osseointegration, and physical properties in an ovine model" @default.
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- W2030485066 doi "https://doi.org/10.1002/jbm.a.32908" @default.
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