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US 2015/0305875 A1Published application
Methods and devices for patellar resurfacing treatment
AssigneeZimmer Knee Creations, Inc.
InventorPeter F. Sharkey
Life of this patent
Estimating the term…
Abstract
Certain disclosed examples provide methods for strengthening, reinforcing, and/or stimulating repair of residual patella bone to be resurfaced. Also provided in some examples are devices associated with the methods. These methods and devices may be utilized during or following total knee replacement (TKR) or total knee arthroscopy (TKA).
Claims20
A patellar resurfacing system, comprising:
- a load-sharing implant having a superior surface, an inferior surface, and at least one hole extending from the superior surface to the inferior surface, the load-sharing implant configured to be received within a corresponding recess formed in a resected patella bone;
- and
- a patellar resurfacing implant having an engaging surface for placement against the resected patella bone and the superior surface of the load-sharing implant, the patellar resurfacing implant including at least one projection extending from the engaging surface, wherein the at least one projection is configured to extend through the load-sharing implant hole and into a corresponding void formed in the recess.
A method of resurfacing a patella bone, comprising:
- resecting a patella bone to form a resected patella bone having a resected patella surface;
- forming a recess in the resected patella bone, the recess having a recessed patella surface;
- forming a void in the recessed patella surface;
- implanting a load-sharing implant into the recess, the load-sharing implant having a superior surface, an inferior surface, and a hole extending from the superior surface to the inferior surface, wherein the hole is aligned with the void;
- and
- implanting a patellar resurfacing implant into the resected patella bone, the patellar resurfacing implant including an engaging surface and a projection extending from the engaging surface.
3 more elements
A patellar resurfacing system, comprising:
- a metallic implant having a superior surface, an inferior surface, an edge connecting the superior surface to the inferior surface, and three holes extending through the superior surface to the inferior surface, the load-sharing implant configured to be received within a corresponding recess formed in a resected patella bone;
- and
- a patellar resurfacing implant having an engaging surface for placement against the resected patella bone and the superior surface of the load-sharing implant, the patellar resurfacing implant including three projections extending from the engaging surface, wherein each projection is configured to extend through a corresponding hole and into a corresponding void formed in the recess.
Dependencies are inferred from the claim text.