Conical patella resurfacing
AssigneeHowmedica Osteonics Corp.
InventorsGeoff Westrich, Gokce Yildirim
Life of this patent
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Abstract
Disclosed herein are patellar implants and methods to prepare bone for receiving the same. The patellar implant may include an articulating surface and an anterior surface with a non-planar surface to engage with a resected patella. The non-planar surface may include a conically shaped portion to receive the resected patellar bone. A method for resurfacing a patella to implant a patellar implant having a recessed anterior surface may include the steps of determining the minimum implant and resection depth, medial and lateral patellar slope angles to select and resect with a symmetrical reamer.
Claims16
A patellar implant comprising:
- a posterior articulating surface for engaging a femoral body, and
- an anterior surface for engaging a resected patellar bone, the anterior surface opposed to the posterior surface,
- wherein the anterior surface includes a conically shaped recess, a substantially circular opening to the conically shaped recess defined by a flat peripheral base of the anterior surface disposed around a circumference of the opening, the conically shaped recess tapering from the opening towards the posterior surface such that the resected patellar bone is configured to be received in the conically shaped recess to secure the patellar implant to the resected patellar bone.
A patellar implant comprising:
- a posterior articulating surface for engaging a femoral body, and
- an anterior surface for engaging a resected patellar bone,
- wherein the anterior surface includes a recessed portion, a substantially circular opening to the recessed portion defined by a flat peripheral base of the anterior surface disposed around a circumference of the opening, the recessed portion tapering from the opening towards the posterior surface such that the resected patellar bone is received in the recessed portion to secure the patellar implant to the resected bone.
Dependencies are inferred from the claim text.