Surgically implantable knee prosthesis with captured keel
OwnerBarry M. Fell, Richard H. Hallockinventors
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Abstract
A unicompartmental knee prosthesis for implantation in a knee joint between a femoral condyle and a corresponding tibia plateau is provided including a generally elliptical body having opposed femoral and tibial face, the body having an anterior end and a posterior end. A keel is provided on the tibial face having a generally anterior-posterior orientation, the keel having an anterior end and a posterior end, where the keel posterior end includes a distal posterior portion that extends farther toward the body posterior end compared with a proximal posterior portion of the keel posterior end.
Claims37
A unicompartmental knee prosthesis for implantation in a knee joint between a femoral condyle and a corresponding tibia plateau, the prosthesis comprising:
- a generally elliptical body having opposed femoral and tibial faces, the body having an anterior end and a posterior end;
- and
- a keel provided on the tibial face having a generally anterior-posterior orientation, the keel having an anterior end and a posterior end, wherein the keel posterior end includes a distal posterior portion that extends farther toward the body posterior end compared with a proximal posterior portion of the keel posterior end.
A unicompartmental knee prosthesis for implantation in a knee joint between a femoral condyle and a corresponding tibia plateau, the prosthesis comprising:
- a generally elliptical body having opposed femoral and tibial faces, the body having an anterior end and a posterior end;
- and
- a keel provided on the tibial face having a generally anterior-posterior orientation, the keel having an anterior end and a posterior end, wherein the keel posterior end includes a distal posterior portion that extends farther toward the body posterior end compared with a proximal posterior portion of the keel posterior end, and wherein the keel anterior end includes a proximal anterior portion that extends farther toward the body anterior end compared with a distal anterior portion of the keel anterior end.
A method of implanting a unicompartmental knee prosthesis in a knee joint between a femoral condyle and a corresponding tibia plateau, the method comprising:
- providing a generally elliptical body having opposed femoral and tibial faces, the body having an anterior end and a posterior end, the prosthesis including a keel provided on the tibial face having a generally anterior-posterior orientation, the keel having an anterior end and a posterior end, wherein the keel posterior end includes a distal posterior portion that extends farther toward the body posterior end compared with a proximal posterior portion of the keel posterior end;
- and
- creating a cut in the tibial plateau arranged to at least partially receive the keel.
Dependencies are inferred from the claim text.