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US 2014/0277548 A1Published application
Unicondylar tibial knee implant
AssigneeMAKO Surgical Corp.
InventorsRobert Craig Cohen, Philip Harris Frank
Life of this patent
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Abstract
An implant providing for both short and long term stability and fixation is disclosed. The implant includes a plurality of projections extending from a bone contacting surface, and a porous material covering at least portions of the surface and projections. The orientation of the projections and the porous material provide for the stability and fixation. Methods of forming and utilizing the implant are also disclosed.
Claims30
An orthopedic implant for replacing a portion of a bone comprising:
- a bone contacting surface;
- and
- a keel extending from the bone contacting surface, the keel including a first projection with a first longitudinal axis and a second projection with a second longitudinal axis, wherein the first and second longitudinal axes are oriented orthogonally to each other.
A tibial baseplate comprising:
- a bone contacting surface having anterior, posterior, medial and lateral sides;
- a first projection extending from the bone contacting surface and having a first length extending in a first direction between the anterior and posterior ends;
- a second projection extending from the bone contacting surface and having a second length extending in a second direction between the medial and lateral sides;
- an aperture for receiving a bone screw;
- and
- a porous material for promoting bone ingrowth, the porous material at least partially covering the bone contacting surface, the first projection and the second projection.
3 more elements
A tibial baseplate comprising:
- a bone contacting surface having anterior, posterior, medial and lateral sides;
- a first projection extending from the bone contacting surface and having a first length extending in a first direction between the anterior and posterior ends;
- a second projection extending from the bone contacting surface and having a second length extending in a second direction between the medial and lateral sides;
- an aperture for receiving a bone screw;
- a plug at least partially covering the aperture, the plug being removable upon the application of a force;
- and
- a porous material for promoting bone ingrowth, the porous material at least partially covering the bone contacting surface, the first projection and the second projection, wherein the porous material defines a plurality of boundary struts extending from the bone contacting surface from 0 to 10 degrees from normal to the bone contacting surface.
4 more elements
Dependencies are inferred from the claim text.