Femoral cut guide

A femoral cut guide for preparing a distal femur to receive a prosthetic femoral component, the prosthetic femoral component including a first articulating surface and an opposing first bone-contacting surface that rests against the distal femur, the prosthetic femoral component further including a central box that projects proximally from the first bone-contacting surface, the femoral cut guide comprising:

• a body having a second articulating surface that is shaped to replicate the first articulating surface and a second bone-contacting surface that is shaped to replicate the first bone-contacting surface, the body including a medial side and a lateral side that define a central opening therebetween;
• a box cut guide removably coupled to the body, the box cut guide including at least one elongate guide slot that is sized to receive a cutting tool therein, the elongate guide slot extending from the medial side to the lateral side of the body across the central opening in the body when the box cut guide is coupled to the body, wherein the box cut guide is configured to guide the cutting tool through the elongate guide slot and across the central opening in the body to remove bone from the distal femur so as to accommodate the central box when the prosthetic femoral component is secured to the distal femur;
• and a second cut guide removably coupled to the body at a separate location from the box cut guide, the second cut guide including at least one elongate guide slot that is sized to receive a cutting tool therein and that extends from the medial side to the lateral side of the body across the central opening in the body when the second cut guide is coupled to the body, wherein the at least one elongate guide slot of the second cut guide and the at least one elongate guide slot of the box cut guide define an obtuse angle therebetween.

A femoral cut guide for preparing a distal femur to receive a prosthetic femoral component, the prosthetic femoral component including a first articulating surface and an opposing first bone-contacting surface that rests against the distal femur, the first bone-contacting surface including a first anterior portion, a first distal portion, and a first posterior portion, the prosthetic femoral component further including a box that projects proximally from the first distal portion of the first bone-contacting surface, the femoral cut guide comprising:

• a body having a second articulating surface that is shaped to replicate the first articulating surface and a second bone-contacting surface that is shaped to replicate the first bone-contacting surface, the second bone-contacting surface including a second anterior portion, a second distal portion, and a second posterior portion, wherein the second anterior portion of the second bone-contacting surface extends substantially parallel to the second posterior portion of the second bone-contacting surface, the body including a medial side and a lateral side that define an opening therebetween;
• a box cut guide removably coupled to the anterior side of the body such that the box cut guide spans the medial and lateral sides of the body across the opening, the box cut guide including a reference surface located in a cut plane, the cut plane extending transversely to both the second anterior portion and the second posterior portion of the second bone-contacting surface, the reference surface located proximally of the second distal portion of the second bone-contacting surface when the box cut guide is coupled to the body, wherein the reference surface of the box cut guide is configured to guide a cutting tool in the cut plane to remove bone from the distal femur so as to accommodate the box when the prosthetic femoral component is secured to the distal femur, the box comprising:
• a top surface that extends between the first anterior portion and the first posterior portion of the first bone-contacting surface, the cut plane intersecting the second anterior portion and the second posterior portion of the second bone-contacting surface, whereby the reference surface of the first box cut guide guides the cutting tool in the cut plane to remove bone from the distal femur so as to accommodate the top surface of the box when the prosthetic femoral component is secured to the distal femur;
• and
• a second cut guide removably coupled to the body at a separate location from the box cut guide such that the second cut guide spans the medial and lateral sides of the body across the opening, the second cut guide including a second reference surface that is located in a second cut plane, wherein the second cut plane of the second cut guide intersects the cut plane of the box guide to define an obtuse angle therebetween.