#$%^&*AU2012203631A120120712.pdf#####ABSTRACT A method for reducing prosthetic loading failure including the steps of providing a prosthesis for a vertebral column comprising at least an upper part for attachment to an upper vertebrae and a lower part for attachment to a lower vertebrae, the upper part having a lower curved surface and the lower part having an upper curved surface, wherein the upper and lower curved surfaces have a centre of radius of curvature offset rearwardly with respect to a central vertical axis through the upper and lower vertebrae, and positioning the centroid of at least one of the upper and lower parts substantially on the same vertical axis of the centre of radius of curvature. 1726007_.doc
