Knee prosthesis
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United States of America Patent
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Jun 19, 2018
Issued Date -
N/A
app pub date -
Mar 11, 2015
filing date -
Jan 27, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component. The tibial insert further configured such that the medial bearing surface extends further in an inferior direction than the lateral bearing surface and a bottom point of the medial bearing surface is disposed closer to an anterior end portion of the medial bearing surface than a posterior end portion of the medial bearing surface.
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