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US 5,071,438 AGranted
Tibial prothesis with pivoting articulating surface
AssigneeIntermedics Orthopedics, Inc.
InventorsRichard E. Jones, Joseph S. Skraba, John D. Vinciguerra
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Abstract
A prosthetic knee with a tibial prosthesis comprising a baseplate and an articulating surface which pivots on the baseplate about an axis within a medial condylar compartment.
Claims22
An implantable prosthesis comprising
- a femoral prosthesis adapted to be mounted on a resected distal end of a patient's femur, said femoral prosthesis having
- a medial convex articulating surface for a medial condyle and
- a lateral convex articulating surface for a lateral condyle, and
- a tibial prosthesis adapted to be mounted on a resected proximal end of a patient's tibia, said tibial prosthesis having
- an upper articulating surface comprising
- a medial condylar compartment having an upper surface for slidingly engaging said medial convex articulating surface,
- a lateral condylar compartment for having an upper surface slidingly engaging said lateral convex articulating surface, and
- rotating means extending outwardly from a bottom surface of said medial condylar compartment for rotating said medial and lateral condylar compartments about an axis through said medial condylar compartment
- a base plate comprising
- means for securing said base plate to the resected proximal end of the tibia, and
- means for receiving said rotating means.
8 more elements
A tibial prosthesis adapted to be mounted on a resected proximal end of the patient's tibia, said tibial prosthesis comprising:
- an upper articulating surface comprising
- a medial condylar compartment having an upper surface for slidingly engaging a medial condyle,
- a lateral condylar compartment having an upper surface for slidingly engaging a lateral condyle, and
- rotating means extending outwardly from a bottom surface of said medial condylar compartment for rotating said medial and lateral condylar compartments about an axis through said medial condylar compartment
- a base plate comprising
- means for securing said base plate to the resected proximal end of the tibia, and
- pivot means for receiving said rotating means.
4 more elements
Dependencies are inferred from the claim text.