Shear strength of loaded porous-glassy-carbon/bone interface—an experimental study on rabbits
- 1 September 1986
- journal article
- conference paper
- Published by Springer Nature in Annals of Biomedical Engineering
- Vol. 14 (5) , 417-424
- https://doi.org/10.1007/bf02367362
Abstract
The aim of the study was to measure the shear strength of bone/porous-glassycarbon interface in rabbit. Glassy carbon pellets were implanted into drill holes made through the medial articular surface of the proximal tibia of 15 rabbits. Shear strengths grew statistically significantly from 1 to 6 weeks ana reached a maximum of 4.6 MN/m2. Microscopical examination of the sheared surfaces revealed that at 1 and 2 weeks the shearing occurred through the tissue surrounding the implant, and at 3, 6 and 12 weeks through the porous coating of the implant. To diminish the fragility of the porous coating, its porosity should be adjusted to 40%. Results of shear strength studies on current implant materials are reviewed.Keywords
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