06908484 is referenced by 116 patents and cites 17 patents.

An articulating joint implant for use in the cervical spine includes a pair of opposing upper and lower elements having nested articulation surfaces providing a center of rotation of the implant above the adjacent vertebral body endplate surfaces in one mode of motion lateral bending and a center of rotation of the implant below those surfaces in flexion/extension, and that further permit axial rotation of the opposing elements relative to one another about the longitudinal axis of the spinal column through a range of angles without causing them to move in opposing directions along the longitudinal axis within that range. In preferred embodiments, the articulation surfaces further cause such opposite movement of the opposing elements beyond that range.

Title
Cervical disc replacement
Application Number
10/382702
Publication Number
6908484 (B2)
Application Date
March 6, 2003
Publication Date
June 21, 2005
Inventor
Joseph P Errico
Greenbrook
NJ, US
Michael W Dudasik
Nutley
NJ, US
Antonio Valdevit
Fishkill
NY, US
Rafail Zubok
Midland Park
NJ, US
Agent
Lerner David Littenberg Krumholz & Mentlik
Assignee
SpineCore
NJ, US
IPC
A61F 002/44
View Original Source