Dylan Hushka;Jeffery Arnett;Neil Duggal;Joshua Butters;Louise Raymond
发明人:
Duggal, Neil,Butters, Joshua A.,Hushka, Dylan,Raymond, Louise C.,Arnett, Jeffery D.
申请号：
AU2008316600
公开号：
AU2008316600B2
申请日:
2008.10.27
申请国别(地区):
AU
年份:
2014
代理人:
摘要：
The present invention provides artificial disc prostheses, methods and instrumentationfor implantation and revision. Each prosthesis may comprise superior and inferiorend plates and a nucleus positioned between articular surfaces of the end plates.The end plates may have planar bone engagement surfaces with a plurality of self-cuttingteeth. The articular surfaces of the end plates may be planar or include a flattenedportion. The nucleus includes superior and inferior articular surfaces whichmay comprise flattened portions such that when the articular surfaces of thenucleus and the end plates are placed in a preferred orientation, the flattenedand/or planar portions are aligned. Each prosthesis may provide flexion/extension,anterior/posterior translation, lateral bending, and/or axial rotation degreesof freedom. One embodiment comprises a prosthesis with a first joint providingflexion/extension and anterior/posterior translation, and a second jointproviding lateral bending and axial rotation.
