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US 2014/0277539 A1Published application
Orthopaedic tibial prosthesis having tibial augments
AssigneeDepuy (Ireland)
InventorsMichael A. Cook, Stephanie M. Wainscott, Tyler S. Hathaway, Joseph G. Wyss
Life of this patent
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Abstract
A tibial orthopaedic prosthesis assembly for use during performance of a knee replacement procedure includes one or more tibial augments configured to be coupled to a tibial tray. Each tibial augment includes an exterior side surface of varying angulation relative to a top surface of the tibial augment.
Claims20
A tibial augment configured to be secured to an implantable prosthetic tibial tray, the tibial augment comprising:
- a top proximal surface that abuts a bottom surface of the tibial tray when the tibial augment is secured to the tibial tray;
- a bottom distal surface opposite the top proximal surface;
- and
- an exterior side surface that extends from the top proximal surface to the bottom distal surface, the exterior side surface including a side surface section extending from an anterior-most point of the exterior side surface to a posterior-most point of the exterior surface, wherein the side surface section defines (i) a first interior angle relative to the top proximal surface at the anterior-most point of the exterior side surface and (ii) a second interior angle relative to the top proximal surface at the posterior-most point of the exterior side surface that is different from the first interior angle.
1 more element
An implantable orthopedic knee prosthesis comprising:
- a tibial tray having a platform and a stem extending downwardly from a bottom surface of the platform, the platform including a top surface, opposite the bottom surface, to receive a tibial bearing;
- a medial tibial augment secured to a medial side of the bottom surface of the platform, the medial tibial augment including (i) a first top surface that abuts the bottom surface of the platform, (ii) a first bottom surface opposite the first top surface, (iii) a first exterior side surface extending from the first top surface to the first bottom surface, (iv) a first interior side surface extending from the first top surface to the first bottom surface, and (v) a first medial end surface extending from the first top surface to the first bottom surface and from the first exterior side surface to the first interior side surface of the tibial augment, wherein the first medial end surface has a constant width;
- and
- a lateral tibial augment secured to a lateral side of the bottom surface of the platform, the lateral tibial augment including (i) a second top surface that abuts the bottom surface of the platform, (ii) a second bottom surface opposite the second top surface, (iii) a second exterior side surface extending from the second top surface to the second bottom surface, (iv) a second interior side surface extending from the second top surface to the second bottom surface, and (v) a second medial end surface extending from the second top surface to the second bottom surface and from the second exterior side surface to the second interior side surface of the tibial augment, wherein the second medial end surface has a constant width,
- wherein the first medial end surface and the second medial end surface oppose each other toward an anterior side of the platform and are spaced apart from each other.
2 more elements
A tibial augment configured to be secured to an implantable prosthetic tibial tray, the tibial augment comprising:
- a top proximal surface that abuts a bottom surface of the tibial tray when the tibial augment is secured to the tibial tray prosthesis;
- a bottom distal surface opposite the top proximal surface;
- and
- an interior surface defining a mounting aperture that extends through the tibial augment and has a first opening defined in the top proximal surface and a second opening defined in the bottom distal surface,
- wherein the top proximal surface has a surface area substantially greater than the surface area of the bottom distal surface.
2 more elements
Dependencies are inferred from the claim text.