| abstract |
Devices and methods for altering the spacing and motion at the facet joints of the vertebral column are provided. One embodiment of the invention comprises a prosthesis 34 with surfaces or faces 46, 48 configured to articulate with the facets 20, 22 of the facet joint 28. A retaining member 72 for anchoring the prosthesis 34 within the facet joint 28 is optionally included. Methods for surgically and less invasively implanting the prosthesis 34 and securing the prosthesis 34 to the articular processes or surrounding soft tissue are also provided. |