Patent ID: 8038713
Filing Date: 2011-10-18
Classification: A61F

Abstract:
1. An artificial disc replacement (ADR) comprising: a first monolithic component having a first bone engaging surface and a first inward facing surface including a first articulating surface; a second monolithic component having a second bone engaging surface and a second inward facing surface including a second articulating surface in contact with the first articulating surface for enabling the first and second components to move relative to one another, wherein the entirety of one of the first or second inward facing surfaces is an articulating surface; the first component having a first axis extending between leading and trailing ends thereof and a second axis, substantially perpendicular to the first axis, extending between lateral ends of the first component; the first articulating surface comprising a first arc extending in a first plane substantially parallel to the first axis, the first arc defining a single, continuous arc the entirety of which is centered between equal portions at or near the leading and trailing ends of the first component, and a second arc extending in a second plane substantially parallel to the second axis, the second arc defining a single, continuous arc the entirety of which is centered between equal portions at or near the lateral ends of the first component, wherein the first and second arcs are perpendicular to one another, wherein the first arc has a radius of curvature which is smaller than a radius of curvature of the second arc.