| Literature DB >> 25540993 |
Nicky Bertollo1, Enrico Sandrini2, Paolo Dalla Pria2, William R Walsh1.
Abstract
Modification of titanium oxide by multiphase anodic spark deposition (ASD) has the potential to increase bioactivity and hasten osseointegration and biological fixation in uncemented arthroplasty. This study assessed the in vivo performance of control (Ti), plasma-sprayed HA-coated (TiHA) and ASD (Biospark) treated (TiAn) porous titanium implants with a solid core using a standard uncemented implant fixation sheep model. Cortical interfacial shear-strength and bone ingrowth in cortical and cancellous sites were quantified following 12 weeks in situ. Ultimate shear-strength for the Ti, TiHA and TiAn coatings was 33±9.5, 35.4±8.4 and 33.8±7.8 MPa, respectively, which was limited by coating delamination. ASD treatment was associated with significantly higher mean bone ingrowth at both sites. These results support the osteoconductive potential of the BioSpark treatment of porous titanium.Entities:
Keywords: animal model; anodisation; bone ingrowth; bone ongrowth; delamination; histomorphometry; hydroxyapatite; plasma-sprayed titanium; shear strength; uncemented implant fixation
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Year: 2013 PMID： 25540993 DOI： 10.1016/j.arth.2013.10.003
Source DB: PubMed Journal: J Arthroplasty ISSN： 0883-5403 Impact factor: 4.757