FACET ARTHROPLASTY DEVICES AND METHODS
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United States of America Patent
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app pub date -
Nov 2, 2007
filing date -
Oct 22, 1999
priority date (Note) -
Abandoned
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Abstract
A prosthesis assembly replaces a cephalad portion of a left natural facet joint (i.e., a left inferior articular process) on a vertebral body and a cephalad portion of a right natural facet joint (i.e., a right inferior articular process) on a vertebral body. The prosthesis assembly has a left prosthesis body accommodating fixation to the vertebral body at or near a left pedicle and without support by a lamina. An artificial left facet joint structure carried by the left prosthesis body and is adapted and configured to replace a cephalad portion of the left natural facet joint. The prosthesis assembly further has a right prosthesis body accommodating fixation to the vertebral body at or near a left pedicle and without support by a lamina. An artificial right facet joint structure is carried by the right prosthesis body and is adapted and configured to replace a cephalad portion of the right natural facet joint.
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