Surgically implantable knee prosthesis having keels
OwnerBarry M. Fell, Richard H. Hallockinventors
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Abstract
An implantable knee prosthesis for unicompartmental implantation into a knee joint includes a body having a substantially elliptical shape in plan and a pair of opposed faces. A peripheral edge extends between the faces and has first and second opposed sides and first and second opposed ends. At least one keel member extends from one of the faces. A first dimension D is defined by the first and second ends. A second dimension F is defined by the first and second sides. The dimension F is from about 0.25 to about 1.5 of the dimension D.
Claims26
A knee prosthesis for unicompartmental implantation into a knee joint, comprising:
- a unicompartmental body having a substantially elliptical shape in plan and opposed first and second faces, the body including a peripheral edge extending between the faces and having a first side, a second side opposite the first side, a first end and a second end opposite the first end;
- and
- at least one keel member extending from the first face, the at least one keel member including a first end, a second end, a first edge attached to the first face and a second edge tapering from the first end to the second end.
A method of providing an implantable knee prosthesis for unicompartmental implantation a knee joint, comprising:
- providing a unicompartmental body having a substantially elliptical shape in plan and opposed first and second faces, the body including a peripheral edge extending between the faces and having a first side, a second side opposite the first side, a first end and a second end opposite the first end;
- and
- extending at least one keel member from the first face, the at least one keel member including a first end, a second end, a first edge attached to the first face and a second edge tapering from the first end to the second end.
A knee prosthesis for unicompartmental implantation into a knee joint, comprising:
- a unicompartmental body having a substantially elliptical shape in plan, the body having a first face, an opposed second face, and a peripheral edge extending between the faces;
- and
- at least one keel member provided on the first face, the at least one keel member having a generally rectangular cross-section and including a first edge attached to the first face and a second, tapered edge extending outwardly from the first face.
A knee prosthesis for unicompartmental implantation into a knee joint, comprising:
- a unicompartmental body having a substantially elliptical shape in plan and a pair of opposed faces, the body including a peripheral edge extending between the faces and having a first side, a second side opposite the first side, a first end and a second end opposite the first end;
- and
- at least two separate keel members extending from one of the faces, a first one of the keel members being angularly disposed with a second one of the keel members, wherein at least one of the keel members includes a raised portion extending from its associated face.
Dependencies are inferred from the claim text.