A femoral component (20, 120, 220) adapted to articulate with a tibial articular surface and a patellar articular surface, the femoral component comprising: a medial condyle (26, 126, 226) comprising: a medial condylar surface shaped to articulate with a medial compartment of the tibial articular surface through a range of motion; and a medial bone-contacting surface (54, 58) disposed opposite said medial condylar surface and positioned to abut a resected femur upon implantation of the femoral component; a lateral condyle (24, 124, 224) separated from said medial condyle by a component sagittal plane, said lateral condyle comprising: a lateral condylar surface shaped to articulate with a lateral compartment of the tibial articular surface through the range of motion; and a lateral bone-contacting surface (54, 58) disposed opposite said lateral condylar surface and positioned to abut the resected femur upon implantation of the femoral component, a patellar flange (22, 122, 222) extending anteriorly from said medial and lateral condyles, said patellar flange comprising: a flange articular surface shaped to articulate with the patellar articular surface; and an anterior bone-contacting surface (50, 150, 250) disposed opposite said flange articular surface and positioned to abut an anterior facet of the resected femur upon implantation of the femoral component, characterised in that said flange articular surface defines a plurality of radii (R 7, R 8) across an entire medial/lateral extent of said flange articular surface, a minimum radius among said plurality of radii equal to at least 5 mm, such that the smallest radius presented across the entire medial/lateral extent of the articular surface of the anterior flange at any given medial/ lateral cross-section is greater than or equal to 5 mm. a medial condyle (26, 126, 226) comprising: a medial condylar surface shaped to articulate with a medial compartment of the tibial articular surface through a range of motion; and a medial bone-contacting surface (54, 58) disposed opposite said medial condylar surface and positioned to abut a resected femur upon implantation of the femoral component; a medial condylar surface shaped to articulate with a medial compartment of the tibial articular surface through a range of motion; and a medial bone-contacting surface (54, 58) disposed opposite said medial condylar surface and positioned to abut a resected femur upon implantation of the femoral component; a lateral condyle (24, 124, 224) separated from said medial condyle by a component sagittal plane, said lateral condyle comprising: a lateral condylar surface shaped to articulate with a lateral compartment of the tibial articular surface through the range of motion; and a lateral bone-contacting surface (54, 58) disposed opposite said lateral condylar surface and positioned to abut the resected femur upon implantation of the femoral component, a lateral condylar surface shaped to articulate with a lateral compartment of the tibial articular surface through the range of motion; and a lateral bone-contacting surface (54, 58) disposed opposite said lateral condylar surface and positioned to abut the resected femur upon implantation of the femoral component, a patellar flange (22, 122, 222) extending anteriorly from said medial and lateral condyles, said patellar flange comprising: a flange articular surface shaped to articulate with the patellar articular surface; and an anterior bone-contacting surface (50, 150, 250) disposed opposite said flange articular surface and positioned to abut an anterior facet of the resected femur upon implantation of the femoral component, characterised in that said flange articular surface defines a plurality of radii (R 7, R 8) across an entire medial/lateral extent of said flange articular surface, a minimum radius among said plurality of radii equal to at least 5 mm, such that the smallest radius presented across the entire medial/lateral extent of the articular surface of the anterior flange at any given medial/ lateral cross-section is greater than or equal to 5 mm. a flange articular surface shaped to articulate with the patellar articular surface; and an anterior bone-contacting surface (50, 150, 250) disposed opposite said flange articular surface and positioned to abut an anterior facet of the resected femur upon implantation of the femoral component, characterised in that said flange articular surface defines a plurality of radii (R 7, R 8) across an entire medial/lateral extent of said flange articular surface, a minimum radius among said plurality of radii equal to at least 5 mm, such that the smallest radius presented across the entire medial/lateral extent of the articular surface of the anterior flange at any given medial/ lateral cross-section is greater than or equal to 5 mm.