Patent ID: 7309362
Filing Date: 2007-12-18
Classification: A61F

Abstract:
1. An artificial knee joint which comprises a femoral component to be secured to a distal portion of a femur and a tibia component to be secured to a proximal portion of a tibia, comprising a medial sliding surface and a lateral sliding surface for receiving a load of the femoral component at the tibia component, wherein the medial sliding surface is formed in a sectional shape of circular arc at the anterior and posterior side(s) in the anterior-to-posterior direction thereof, while the lateral sliding sectional shape of circular arc at the anterior side and in a sectional shape of linear at the posterior side(s) in the anterior-to-posterior direction thereof, wherein the anterior side of the medial sliding surface makes a circular arc having a curvature radius R 1 at a longitudinal section and the posterior side makes a circular arc having a curvature radius R 2 , wherein R 1 <R 2 .