Femoral prosthesis with medialized patellar groove

A set of femoral components adapted to mount to a femur having an anatomic axis and a mechanical axis, the femur having lateral and medial condyles with respective distal-most points before resection, the femur defining a mechanical transverse plane normal to the mechanical axis and an anatomic transverse plane tangent to each of said distal-most points, the set comprising:

• a first femoral component having
• a first lateral condyle,
• a first medial condyle opposite said first lateral condyle, such that a path from said first lateral condyle toward said first medial condyle defines a medial direction, and
• a first anterior flange joining said first lateral condyle to said first medial condyle, said first anterior flange having a patellar groove defining a medially canted patellar axis extending in said medial direction as said medially canted patellar groove extends proximally;
• and
• a second femoral component having
• a second lateral condyle,
• a second medial condyle opposite said second lateral condyle, such that a path from said second medial condyle toward said second lateral condyle defines a lateral direction, and
• a second anterior flange joining said second lateral condyle to said second medial condyle, said second anterior flange having a patellar groove defining a laterally canted patellar axis extending in said lateral direction as said laterally canted patellar groove extends proximally,
• said first lateral and medial condyles and said second lateral and medial condyles each defining respective distal-most points and respective posterior-most points, each of said first femoral component and said second femoral component defining a component coordinate system having:
• a component transverse plane tangent to each of said distal-most points;
• a coronal plane perpendicular to said component transverse plane and tangent to at least one of said posterior-most points;
• and
• a sagittal plane perpendicular to said component transverse plane and disposed between said first lateral condyle and said first medial condyle, said sagittal plane inclusive of a distal-most point of said patellar groove, said sagittal plane including a component midline that is normal to said component transverse plane and inclusive of said distal-most point of said patellar groove,
• said medially canted patellar axis of said medially canted patellar groove of said first anterior flange defining a medially canted angle with respect to said component midline, when viewed from an anterior side of said first femoral component, and
• said laterally canted patellar axis of said laterally canted patellar groove of said second anterior flange defining a laterally canted angle with respect to said component midline, when viewed from an anterior side of said second femoral component.