Patent ID: 8292964

Claim:
An artificial knee joint comprising: a femoral component comprising an anterior portion, a posterior portion, a distal portion and an interior surface, said femoral component further comprising: a patella flange located on said anterior portion of said femoral component, wherein a surface of said patella flange matches a profile of an anatomic patella; a low profile protrusion located on said interior surface of said femoral component; an intercondylar cupola, housed within said low profile protrusion, defining an opening on surface of said distal portion between a medial condyle and a lateral condyle, said intercondylar cupola characterized by smooth contours between said intercondylar cupola and a surrounding femoral bearing surface, said femoral bearing surface comprising a medial condylar surface that is substantially conformal, in a sagittal plane, with an articulating medial tibial dished surface for all flexion angles and operatively configured to limit anterior-posterior displacement of said medial condyle and a lateral condylar surface that has low conformity, in a sagittal plane, with an articulating lateral tibial dished surface and is operatively configured to permit anterior-posterior displacement of said lateral condyle, for flexion angles greater than approximately 60 degrees, wherein said medial and lateral condylar surfaces are dissimilarly shaped with said medial condylar surface comprising an anterior medial recess formed as a continuation of a distal radius in a sagittal plane.