Facet joint prostheses
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United States of America Patent
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Nov 29, 2011
Grant Date -
Aug 21, 2008
app pub date -
Oct 21, 2005
filing date -
Oct 22, 1999
priority date (Note) -
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Abstract
Cephalad and caudal vertebral facet joint prostheses and methods of use are provided. A pair of fixation elements are adapted to be secured within a vertebra in an orientation that best assures a secure and durable attachment to cortical and/or cancellous bone. Artificial facet joint surfaces are mounted on the fixation elements, either directly or with the aid of a support. The artificial facet joint structure may be carried by an arm. The artificial facet joint structure is adapted for articulation with a complementary natural or artificial facet joint structure. Bilateral prostheses may by coupled by a brace to further secure and stabilize the prostheses. Artificial facet joints can be used in combination with artificial intervertebral discs to treat a spinal pathology.
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