Tibial knee component with a mobile bearing
First Claim
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1. An orthopaedic knee component for implanting within a proximal tibia, comprising:
- a tibial tray including a distally extending stem, a proximal tibial plateau, a post extending generally orthogonal to said tibial plateau and defining an axis of rotation, and an annular shaped recess surrounding said post and extending into said tibial plateau, said recess having a substantially constant radius of curvature about said axis of rotation; and
a bearing carried by said tibial tray and having an articular bearing surface for engagement with a femoral component, said bearing having an annular shaped projection extending into said recess, said projection and said recess allowing pivotal movement of said bearing relative to said tibial plateau about said axis of rotation.
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Abstract
An orthopaedic knee component for implanting within a proximal tibia includes a tibial tray having a distally extending stem, a proximal tibial plateau and an annular shaped recess extending into the tibial plateau. The recess has a substantially constant radius of curvature about an axis of rotation. A bearing carried by the tibial tray has an articular bearing surface for engagement with a femoral component. The bearing has an annular shaped projection extending into the recess. The projection and the recess allow pivotal movement of the bearing relative to the tibial plateau about the axis of rotation.
297 Citations
4 Claims
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1. An orthopaedic knee component for implanting within a proximal tibia, comprising:
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a tibial tray including a distally extending stem, a proximal tibial plateau, a post extending generally orthogonal to said tibial plateau and defining an axis of rotation, and an annular shaped recess surrounding said post and extending into said tibial plateau, said recess having a substantially constant radius of curvature about said axis of rotation; and
a bearing carried by said tibial tray and having an articular bearing surface for engagement with a femoral component, said bearing having an annular shaped projection extending into said recess, said projection and said recess allowing pivotal movement of said bearing relative to said tibial plateau about said axis of rotation. - View Dependent Claims (2, 3, 4)
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Specification