#$%^&*AU2014280965A120150122.pdf#####Abstract A method for reducing prosthetic loading failure includes providing a prosthesis for placement within a disc space of a vertebral column and configuring the prosthesis such that the upper and lower curved surfaces thereof have a centre of radius of curvature offset rearwardly with respect to a central vertical axis through the upper and lower vertebrae when the prosthesis is implanted, and configuring the prosthesis such that at least one of the upper contact surface of the upper part and the lower contact surface of the lower part thereof has a sufficient amount of the surface area removed from the anterior region to create a generally balanced net moment anteriorly and posteriorly about a vertical axis passing through the centre of radius of curvature when the prosthesis is implanted.
