Tibial knee joint prosthesis with removable articulating surface insert
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United States of America Patent
Stats
-
Dec 22, 1987
Grant Date -
N/A
app pub date -
May 12, 1986
filing date -
May 12, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention provides an improved implantable tibial component comprising an implantable tibial base containing two separate, opposed raised walls which engage oppositely configured recesses in the lower surface of a removable hard polymeric condylar articulating surface insert. The locking mechanism which holds the insert within the base provides a means by which the insert can be locked within the base in a secure fashion. The locking mechanism further provides a means by which the insert can be removed from the implanted tibial base in a simple fashion by raising the anterior end of the insert over the top of the anterior wall on the edge of the tibial base and sliding the insert anteriorly out of the posterior raised walls which also extend along the medial and lateral edges of the tibial base.
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