Asymmetrical femoral component for knee prosthesis
First Claim
1. An asymmetric distal femoral component for a knee prosthesis having frontal and distal sides, said component comprising a medial condyle and a lateral condyle defining a notional joint line, and a notional midline, said component further comprising a sulcus on said frontal and distal sides between said condyles, said sulcus having a medial angle with said joint line between about 90 and 97 degrees on said front side, and having a sulcus origin displaced from said midline, wherein said medial condyle is wider than said lateral condyle and said lateral condyle is higher than said medial condyle.
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Accused Products
Abstract
An asymmetric distal femoral prosthetic component is provided for use in arthroplasty having a sulcus angled laterally upward, and preferably laterally displaced from the midline. This design more closely approximates the configuration of the natural knee and reduces patellar maltracking and excessive wear and failure of the component.
452 Citations
7 Claims
- 1. An asymmetric distal femoral component for a knee prosthesis having frontal and distal sides, said component comprising a medial condyle and a lateral condyle defining a notional joint line, and a notional midline, said component further comprising a sulcus on said frontal and distal sides between said condyles, said sulcus having a medial angle with said joint line between about 90 and 97 degrees on said front side, and having a sulcus origin displaced from said midline, wherein said medial condyle is wider than said lateral condyle and said lateral condyle is higher than said medial condyle.
Specification