Knee prosthesis system and method

A system for a knee arthroplasty comprising:

• a femoral prosthesis having a joint facing surface and an opposing bone facing surface;
• a plurality of features each selectively attachable with and removable from the femoral prosthesis at or adjacent the bone facing surface, wherein each of the plurality of features comprise one of a box, a stem, or a combination of the box and the stem;
• and
• a plurality of tibial bearing components each having one of a different design type;
• wherein the femoral prosthesis is configured to articulate through a range of motion with at least a one of the plurality of tibial bearing components without any of the plurality of features attached thereto and at least a second of the plurality of tibial bearing components is configured to articulate through the range of motion with the femoral prosthesis having one of the plurality of features attached thereto.

A method of determining a desired implant configuration for a knee joint of a patient during a knee arthroplasty comprising:

• providing a femoral prosthesis mountable to a femur and configured to articulate with at least a first design type of a tibial bearing component, wherein the femoral prosthesis is configured to be modified by attaching one or more features thereto to provide further stabilization to the knee joint;
• determining if the femoral prosthesis without the one or more features attached would provide adequate one or more of bone fixation of the femoral prosthesis and stabilization of the knee joint;
• and
• proceeding to modify the femoral prosthesis by attaching the one or more features thereto if the one or more of the bone fixation and the stabilization of the knee joint is determined to be inadequate.