Patent ID: 8715358

Claim:
A total knee implant system for replacing the articulating portion of a femur and a tibia while substituting for the function of an absent anterior cruciate ligament and allowing for the retention of the posterior cruciate ligament without the posterior cruciate ligament contacting a posterior aspect of the implant, the implant comprising: a femoral component having medial and lateral condyles, said femoral component having a central passageway adapted to receive the posterior cruciate ligament; a tibial component having a recess adapted to receive the posterior cruciate ligament; an intercondylar element bridging said condyles transversely and forming a transverse cam on the femoral component, wherein said element is located anterior to the central passageway to receive the posterior cruciate ligament to prevent impingement of the ligament against the intercondylar element; and an intercondylar mating surface on the tibial component for contacting the intercondylar element of the femoral component during at least a portion of an arc of motion of the total knee implant system wherein said transverse cam contacts a posterior surface of said mating surface thereby enabling generally normal function of the posterior cruciate ligament wherein said recess adapted to receive the ligament passes posterior to said element.