Associated instruments and methods for posterior stabilized knee preparation

A system for guiding femoral bone and/or tissue removal during a knee replacement surgery, the system comprising:

• a femoral component configured to engage a resected distal surface of a femur, the femoral component having a box cutout configured to provide access to a distal centrally located region of the femur, the box cutout disposed between a medial condyle, a lateral condyle and an anterior portion of the femoral component;
• a femoral insert configured to be secured within the box cutout, wherein together the femoral insert and the femoral component form a trial femoral prosthesis;
• a guide configured to selectively connect to the femoral component at one or more locations, the guide comprising a frame forming an enclosed opening configured to provide access to the box cutout and the distal centrally located region of the femur,
• wherein the frame has a curved portion such that the frame defines a first opening portion of the enclosed opening that is oriented transverse to a second opening portion of the enclosed opening;
• and
• a reamer, configured to cut tissue by one or both of plunging and milling,
• wherein the frame forms one or more surfaces that are configured to act as a track to be traced along by the reamer when removing at least one of bone and tissue from the distal centrally located region of the femur,
• wherein when the guide is connected to the femoral component, the frame is configured such that the first opening portion and the second opening portion allow the reamer to access the box cutout and the distal portion of the femur from different orientations including a proximal-distal orientation and an anterior-posterior orientation.