A prosthetic device for replacing a facet joint in the spine of a patient is provided. The prosthetic device includes an anchoring member and a plate member rotatably and pivotably connected to each other by a ball and socket mechanism. The anchoring member is preferably in the form of a bone screw for...http://www.google.es/patents/US20050197700?utm_source=gb-gplus-sharePatente US20050197700 - Facet joint prosthesis and method of replacing a facet joint
Facet joint prosthesis and method of replacing a facet joint
