Modular knee prosthesis
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United States of America Patent
Stats
-
Jun 26, 1990
Grant Date -
N/A
app pub date -
Jan 11, 1989
filing date -
Jan 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an implantable knee joint prosthesis which is designed to replace the engaging surfaces of the femur and tibia of a dysfunctional human knee joint. In its most general form, the invention comprises an implantable knee joint prosthesis having a tibial stem portion, a tibial tray portion, an interchangeable modular articulating surface member which is removably attached to the tibial tray portion, and a femoral portion adapted to cooperatively bear upon the articulating surface. The invention also features a dual locking mechanism which attaches the articulating surface to the tibial tray portion by means of a locking lip and flange arrangement together with a locking screw which fits into the tibial stem portion.
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