Patellar prosthetic arrangement and associated surgical method
OwnerJames Mercinek, Mark B. Lester +1inventors
InventorsJames Mercinek, Mark B. Lester, Alan C. Merchant
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OwnerJames Mercinek, Mark B. Lester +1inventors
InventorsJames Mercinek, Mark B. Lester, Alan C. Merchant
Estimating the term…
A prosthetic patellar component includes a base and a bearing element that includes first and second femoral engaging surfaces disposed between first and second (superior/inferior) edge surfaces The edge surfaces are curved to provide a gradual transition from a posterior facing portion to a nearly vertical superior or inferior facing portion. Moreover, the inferior-superior dimension of the component is at least approximately 90% of the medial-lateral dimension. The relative height and gradually transitioning edges significantly reduce the likelihood of sudden posterior rotation during deep flexion movement. The edge surfaces extend from a substantially posterior facing portion proximate to the first and second femoral engaging surfaces and a substantially vertical facing portion proximate the base. The curved edge surfaces can include a plurality of adjacent medial-laterally extending surface portions having angular displacement relative to an adjacent surface portion of less than about 30 degrees in the anterior-posterior direction.
A prosthetic patellar component comprising:
The prosthetic patellar component of claim 17 wherein said bearing element has a medial-lateral length and a largest inferior-superior length, such that the ratio of the largest inferior-superior length is at least about 90% of the medial-lateral length
A prosthetic patellar component comprising:
A prosthetic patellar component comprising:
A method of performing multiple operations on a knee joint, comprising
Dependencies are inferred from the claim text.