Patent ID: 9498342
Filing Date: 2016-11-22
CPC Classification: A61F

Claim Text:
1. An implantable orthopaedic knee prosthesis assembly, comprising: a first dome patella component having (i) a posterior bearing surface configured to articulate with the femoral condyles of an implantable femoral component, and (ii) an anterior surface having a number of pegs extending outwardly therefrom, wherein, when viewed in a coronal cross sectional view, (a) the posterior bearing surface of the first dome patella component has a curved peak surface that includes a posterior-most point of the first dome patella component, and (b) a first imaginary line segment extends orthogonally from the anterior surface of the first dome patella component to the posterior-most point of the first dome patella component, and a second dome patella component having (i) a posterior bearing surface configured to articulate with the femoral condyles of an implantable femoral component, (ii) an anterior surface having a number of pegs extending outwardly therefrom, and (iii) a medial/lateral width that is the same as the medial/lateral width of the first dome patella component, wherein, when viewed in a coronal cross sectional view, (a) the posterior bearing surface of the second dome patella component has a curved peak surface that includes a posterior-most point of the second dome patella component, and (b) a second imaginary line segment extends orthogonally from the anterior surface of the second dome patella component to the posterior-most point of the second dome patella component, the second imaginary line segment being longer than the first imaginary line segment, wherein the curved peak surface of both the first and second dome patella components comprises a section of a sphere that is less than a hemisphere, and the posterior bearing surface of both the first and second dome patella components further has a conically-shaped surface that extends anteriorly away from the curved peak surface and transitions into a rounded edge surface that extends anteriorly away from the conically-shaped surface in the direction toward the anterior surface.