Mobile bearing knee prosthesis
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United States of America Patent
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Sep 9, 2008
Grant Date -
Feb 3, 2005
app pub date -
Jul 19, 2004
filing date -
Jul 17, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment of the present invention a mobile bearing knee prosthesis may include an interface (e.g., a spherical radius interface) comprised of a concave superior surface on a tibial tray and a convex inferior surface on a tibial insert. In another embodiment of the present invention a mobile bearing knee prosthesis may include an interface (e.g., a spherical radius interface) comprised of a convex superior surface on a tibial tray and a concave inferior surface on a tibial insert. In another embodiment of the present invention a mobile bearing knee prosthesis may include a bi-concave interface (e.g., having a 'wave' like surface geometry). This 'wave' like surface geometry may be at the second bearing (i.e., at the interface between a tibial insert and a tibial tray in the mobile bearing knee as opposed to the interface between the tibial insert and a femoral component).
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