Patent ID: 8518113
Filing Date: 2013-08-27
Classification: A61F

Abstract:
1. An intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates, comprising: a body including an outer surface bearing portion configured to interface with and articulate relative to the second vertebral endplate; the body being sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate or vice versa, the body being shaped in a manner that results in a relatively small area of contact between the second vertebral endplate and the body; and a prosthetic endplate including a first portion that defines a depression configured to receive the body and a protruding portion, the prosthetic endplate further including a second portion including an inner surface configured with an opening extending through upper and lower surfaces of the second portion for disposal of the protruding portion, the second portion configured to interface directly with the first vertebral endplate.