Interface Biomechanical Properties between Femora and Bioactive Ceramic Coatings Prostheses during the Initial Implant Stage

Liu Ding Tang; W.M. Zhao; L.Y. Tian; Bing Zhe Li

doi:10.4028/www.scientific.net/KEM.336-338.1806

Paper Titles

Effect of Heat Treatment on Coloration of Ag Doped TiO₂-SiO₂ Films
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Photo-Hydrophilicity and Photo-Catalysis of TiO₂-SiO₂ Coating on Ceramics
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AFM Investigation of Nano Particle Incorporated Sb Doped SnO₂ Films
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Development and Characterization of Nano-TiO₂/HA Composite Bioceramic Coating on Titanium Surface
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Interface Biomechanical Properties between Femora and Bioactive Ceramic Coatings Prostheses during the Initial Implant Stage
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Two-Steps Digital Image Correlation and Application to Studies of Micromechanics Behavior of Coating Interface
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Adsorption of Human Serum Proteins on Carbonaceous Materials
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Thermal Shock Experiment and Simulation of Ceramic/Metal Gradient Thermal Barrier Coating
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Mechanisms and Kinetics of Silica-Rich Binary Na₂O-SiO₂ Glass Corrosion in 100°C Water at pH=7
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Interface Biomechanical Properties between Femora and Bioactive Ceramic Coatings Prostheses during the Initial Implant Stage

Abstract:

Biomechanical models of implanting prostheses into femora by means of press fit, i.e. the mechanics of non-homogeneous layer-like composites, have been used to quantify the press-fit strength and circumferential stress of the interface, when femora are partially replaced by different thicknesses of bioactive ceramic coatings on a prosthesis surface during the initial implant stage. The maximum press-fit strength appears on the interface between femora and Ti alloy prostheses with non-coating; the press-fit strength decreases with the increased thickness of the coating. The circumferential stress displayed as the large tensile stress at the femoral side of the interface; the compressive stress, appeared at the side of the coating and Ti alloy prosthesis. The shearing strength, jointing between the prostheses and femora would be bigger with the thinner bioactive ceramic coatings. Considering the biodegradability of bioactive ceramic coatings, e.g. hydroxyapatite, HA, it is concluded that the optimum thickness of the bioactive ceramic coatings will be about 50-60 microns.