Implant device used in minimally invasive facet joint hemi-arthroplasty
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United States of America Patent
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Apr 14, 2009
Grant Date -
May 25, 2006
app pub date -
Jul 8, 2005
filing date -
Nov 22, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A metallic inverted L-shaped implant is used to resurface the superior facet of the inferior vertebrae limited to the facet joints located on the spine, Occiput-C1 through L5-S1. The metallic implant is highly polished on its exterior and textured on its interior surface. It is mechanically crimped in place without the use of cement or pedicle screws. Permanent fixation occurs when bone in-grows onto a rough, porous surface on the inside of the implant. The implant employed in a hemi-arthroplasty method resurfaces half of the facet joint to provide for smooth, pain free joint articulation in deteriorated or diseased spinal facet joints without the need for major surgery or rehabilitation at considerably less risk to the patient.
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