Abstract
The objective of this paper is to investigate bone-implant interface failure using analytical techniques of fracture mechanics. The implant usually is anchored to the surrounding bone by growth of bony tissue into the surface of the implant. A mechanical interlock is formed between the implant and the bone. Plane strain conditions are imposed. By using a continuous distribution of edge dislocations to represent interfacial debonding, the problem reduced to a system of singular integral equations that was solved numerically using standard collocation techniques. Quantities of interest are the extent of the debonded zone, the relative displacement between the implant and the bone and the stresses at the bone-implant interfaces, all of which depend on the load in a nonlinear fashion.
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