Apparatus and method for measuring instability of a motion segment unit of a spine
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United States of America Patent
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Dec 26, 2006
Grant Date -
Jun 17, 2004
app pub date -
Oct 30, 2003
filing date -
Oct 30, 2002
priority date (Note) -
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Abstract
Apparatus and method for measuring spinal instability through the use of a distractor arm assembly having segments pivotal with respect to each other and movable through the movement of a pivotal collar assembly along a centrally positioned jackscrew.
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