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US 2004/0167631 A1Published application
Fixation surface for ankle prosthesis
OwnerKenny Luchesi, Steven Brown +1inventors
InventorsKenny Luchesi, Steven Brown, Mengke Zhu
Life of this patent
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Abstract
An ankle prosthesis comprising two separate components, a tibial component and a talar component. Each component has an articulating surface and a fixation surface. The fixation surfaces are cement retained and include an elongated keel and a plurality of cement grooves to bond with bone cement and bone.
Claims20
1) An ankle prosthesis, comprising:
- a talar component having a body with a talar fixation surface and an oppositely disposed talar articulating surface, wherein the talar fixation surface is adapted to engage a natural talus, has an elongated keel projecting outwardly from the fixation surface, and has at least one cement groove;
- and
- a tibial component having a body with a tibial fixation surface and an oppositely disposed tibial articulating surface, wherein the tibial fixation surface is adapted to engage a natural tibia, has an elongated keel projecting outwardly from the fixation surface, and has at least one cement groove.
9) An ankle prosthesis, comprising:
- a talar component having a body with a talar fixation surface and an oppositely disposed talar articulating surface, wherein the talar fixation surface is adapted to connect to a natural talus and has a plurality of parallel cement grooves;
- and
- a tibial component having a body with a tibial fixation surface and an oppositely disposed tibial articulating surface, wherein the tibial fixation surface is adapted to connect to a natural tibia and has an elongated keel extending downwardly from the fixation surface.
17) A prosthetic ankle system, comprising:
- a plurality of differently sized talar components, wherein each talar component has a talar fixation surface adapted to engage a natural talus and a talar articulating surface;
- and
- a plurality of differently sized tibial components, wherein each tibial component has a tibial fixation surface adapted to engage a natural tibia and a tibial articulating surface adapted to engage the talar articulating surface, wherein at least one talar component and at least one tibial component together form an ankle prosthesis adapted for use at an ankle joint, and wherein the talar and tibial fixation surfaces include an elongated keel and at least one cement groove.
Dependencies are inferred from the claim text.