Hinge knee preparation instrumentation and associated methods
AssigneeHowmedica Osteonics Corp.
InventorCarlos E. Collazo
Life of this patent
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Abstract
A hinge knee system includes a tibial assembly having a baseplate component and an axle component. The baseplate component has an opening that extends therein from a proximal end toward a distal end thereof. The axle component has a shaft portion receivable within the opening of the baseplate component and an axle connected to the shaft portion that extends in a direction transverse to a longitudinal axis of the shaft portion. The system also includes a femoral assembly that includes a distal femoral component. The distal femoral component includes condylar portions and an intercondylar portion disposed between the condylar portions. The intercondylar portion includes a bearing surface that defines a recess configured to rotatably receive the axle for articulation therewith.
Claims17
A knee arthroplasty system, comprising:
- a femoral component having a first side and a second side, the first side defining first and second condylar portions, the second side having an adaptor connection member;
- a valgus adaptor having a first member, a second member, and a locking pawl, the first member and locking pawl being configured to releasably engage the adaptor connection member of the femoral component to selectively secure it thereto, wherein the second member has a slot extending along its side and wherein the locking pawl is partially disposed and moveable within said slot;
- and
- a stem having a distal end configured to be received within an intramedullary canal of a femur and a proximal end configured to engage the second member of the valgus adaptor to secure it thereto.
A knee arthroplasty system, comprising:
- a femoral cutting guide having first and second sides and first guide slot extending through the first and second sides, the second side having an adaptor connection member extending therefrom;
- a valgus stem adaptor having first and second members and a locking pawl, the first member and locking pawl being configured to selectively engage the adaptor connection member, wherein the second member has a slot extending along its side and wherein the locking pawl is partially disposed and moveable within said slot;
- and
- a stem having a distal end configured to be received within an intramedullary canal of a femur and a proximal end configured to engage the second member of the valgus adaptor to secure it thereto.
Dependencies are inferred from the claim text.