An arrangement for providing the proximal surface of the distal end of the femur and the posterior femoral condyle of the femur for a femoral component of a prosthetic knee joint, said arrangement including:
- a femoral component mountable to the femur such that a vertical section of the femoral component is adapted to be aligned with the distal end of the femur and a horizontal section of the femoral component is adapted to be aligned with a posterior femoral condyle of the femur;
- said vertical section including an inside surface adapted to face an initial resected distal end of the femur, and user-operable lateral adjustable extension tabs each laterally adjustable relative to the inside surface to contact the initially resected distal end, such that lateral adjustment of the user-operable lateral adjustable extension tabs in each of extension, mid-flexion and flexion positions of the prosthetic knee joint orients the inside surface of the vertical section to define a femur reference plane, wherein a final bone resection of the distal end of the femur consistent with the orientation of the femur reference plane provides balanced angular movement between the tibia component and the femoral component of the prosthetic knee joint throughout an arc of motion from the extension position, through the mid-flexion position, to the flexion position post-surgery;
- said horizontal section of the femoral component including a top surface adapted to face an initial resected surface of the posterior femoral condyle of the femur, and user-operable height adjustable extension tabs, each height adjustable relative to the top surface to contact the initially resected surface of the posterior femoral condyle, such that height adjustment of the user operable height adjustable extension tabs in each of extension, mid-flexion and flexion positions of the prosthetic knee joint orients the top surface of the horizontal section to define a posterior femoral condyle reference plane, wherein a final bone resection of the posterior femoral condyle of the femur consistent with the orientation of the posterior femoral condyle referenced plane provides for balanced angular movement between the femoral component and the tibia component of the prosthetic knee joint throughout an arc of motion from the extension position, through the mid-flexion position, to the flexion position post-surgery.