Linked Life Data

15621242

Source:http://linkedlifedata.com/resource/pubmed/id/15621242

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pubmed-article:15621242pubmed:abstractTextEarly bone ongrowth is known to increase primary implant fixation and reduce the risk of early implant failure. Arg-Gly-Asp (RGD) peptide has been identified as playing a key role in osteoblast adhesion and proliferation on various surfaces. The aim for this study is to evaluate the effect of RGD peptide coating on the bony fixation of orthopaedic implants, to justify its further evaluation in clinical applications. Sixteen unloaded cylindrical plasma sprayed Ti6Al4V implants coated with cyclic RGD peptide were inserted as press-fit in the proximal tibia of 8 mongrel dogs for 4 weeks. Uncoated control implants were inserted in the contralateral tibia. Results were evaluated by histomorphometry and mechanical push-out test. A significant two-fold increase was observed in bone ongrowth for RGD-coated implants. Also, fibrous tissue ongrowth was significantly reduced for RGD-coated implants. Bone volume was significantly increased in a 0-100 microm zone around the implant. The increased bony anchorage resulted in moderate increases in mechanical fixation as apparent shear stiffness was significantly higher for RGD-coated implants. Increases in median ultimate shear strength and energy to failure were also observed. This study demonstrates that cyclic RGD coating increases early bony fixation of unloaded press-fit titanium implants.lld:pubmed
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pubmed-article:15621242pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:15621242pubmed:articleTitleIn vivo study of the effect of RGD treatment on bone ongrowth on press-fit titanium alloy implants.lld:pubmed
pubmed-article:15621242pubmed:affiliationOrthopaedic Research Laboratory, Department of Orthopaedic Surgery, Aarhus University Hospital, AKH, Norrebrogade 44, Bygn. 1A, DK-8000 Aarhus C, Denmark. brianelm@dadlnet.dklld:pubmed
pubmed-article:15621242pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15621242pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:15621242pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
pubmed-article:15621242pubmed:publicationTypeEvaluation Studieslld:pubmed
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