Patent ID: 9028555
Filing Date: 2015-05-12
Classification: A61F

Abstract:
1. An artificial knee joint, comprising: a femoral component configured to be fixed to a distal part of a femur; a tibial tray configured to be fixed to a proximal part of a tibia; and a tibial plate engaged on the tibial tray in such a manner that the femoral component is movable relative to the tibial plate so as to change a flexion angle between the femoral component and the tibial plate, the femoral component comprising: a second sliding surface extending superiorly from the first sliding surface in such a manner that the second sliding surface is positioned directly above the first sliding surface when the flexion angle is 0°, and the tibial plate comprising: the first sliding surface and the fourth sliding surface being convex curved surfaces, the fourth sliding surface being positioned posterior to the third sliding surface, wherein, according to the flexion angle, the femoral component and the tibial plate are configured to move in a first sliding state in which the first sliding surface and the third sliding surface are in contact with each other, or a second sliding state in which the second sliding surface and the fourth sliding surface are in contact with each other.