Standard or customized knee implant with asymmetric femoral component and tibial offset

A knee replacement implant for implantation in a knee joint of a patient, comprising:

• a knee replacement implant including a femoral implant for implantation on a femur of the patient and a tibial implant for implantation on a tibia of the patient, the femoral implant including a lateral condyle portion having a curved condylar shape and having an lateral bearing surface configured to articulate with the tibial implant when the tibial and femoral implants are implanted in the knee joint of the patient and an inner surface configured to abut one or more bone cut surfaces of a lateral condyle of a femur when the femoral implant is implanted in the knee joint of the patient, and a medial condyle portion having a second curved condylar shape and having a medial bearing surface configured to articulate with the tibial implant when the tibial and femoral implants are implanted in the knee joint of the patient and a second inner surface configured to abut one or more bone cut surfaces of a medial condyle of the femur when the femoral implant is implanted in the knee joint of the patient;
• and wherein the lateral condyle portion further includes a lateral distal portion and a lateral posterior portion having a lateral distal and lateral posterior facet surface disposed on the inner surface;
• the medial condyle portion further includes a medial distal portion and a medial posterior portion having a medial distal and medial posterior facet surface disposed on the second inner surface;
• and wherein the medial posterior facet surface has a greater area than the lateral posterior facet surface and wherein the medial distal facet surface has substantially the same area as the lateral distal facet surface.

A knee replacement system for implantation in a knee joint of a patient, comprising:

• a knee replacement implant including a femoral implant for implantation on a femur of the patient and a tibial implant for implantation on a tibia of the patient, the femoral implant including a lateral condyle portion having a generally curved lateral condylar shape, and having an lateral bearing surface configured to articulate with the tibial implant when the tibial and femoral implants are implanted in the knee joint of the patient and an inner surface configured to abut one or more bone cut surfaces of a lateral condyle of a femur when the femoral implant is implanted in the knee joint of the patient, wherein the lateral condyle portion includes a lateral distal portion and a lateral posterior portion;
• and the femoral implant further including a medial condyle portion having a generally curved medial condylar shape and having a medial bearing surface configured to articulate with the tibial implant when the tibial and femoral implants are implanted in the knee joint of the patient and a second inner surface configured to abut one or more bone cut surfaces of a medial condyle of the femur when the femoral implant is implanted in the knee joint of the patient, wherein the medial condyle portion includes a medial distal portion and a medial posterior portion;
• and the medial distal portion of the medial condyle portion and the lateral distal portion of the lateral condyle portion each having substantially the same width measured in substantially the mediolateral direction and the medial posterior portion of the medial condyle portion being wider than the lateral posterior portion of the lateral condyle portion measured in substantially the mediolateral direction;
• further comprising a tibial implant including a lateral plateau portion with a lateral plateau bearing surface configured to articulate with the lateral bearing surface of the femoral implant when the tibial and femoral implants are implanted in the knee joint of the patient, a medial plateau portion with a medial plateau bearing surface configured to articulate with the medial bearing surface of the femoral implant when the tibial and femoral implants are implanted in the knee joint of the patient, and a bone-facing surface configured to abut a cut proximal end of a tibia of the patient when the tibial implant is implanted in the knee joint of the patient, wherein the medial plateau bearing surface is configured to be offset in a proximal direction relative to the lateral plateau bearing surface when the tibial implant is implanted in the patient.