The present invention relates to a femoral component (1) having two condylar surfaces (1a, 1b) fixed to the distal femur, a tibial component (2) fixed to the proximal tibia, The invention relates to a knee endoprosthesis comprising a plurality of sliding surfaces between components (1, 2). The endoprosthesis for the knee optimally replicates the anatomical and kinematic characteristics of the natural knee joint, while at the same time having minimal wear based on particularly suitable material combinations and reduced wear surfaces To this end, in the present invention, the entire femoral component (1) articulated to the tibial component (2), but at least each of the condylar surfaces (1a, 1b) of the femoral component (1) is rigid. The tibial component (2) comprises a sintered ceramic, and the tibial component (2) has a tibial plateau (11) made of a hard sintered ceramic, the tibial plateau (11) comprising the femoral component (11). 1) having a spherical inner bearing shell (7) on the upper surface facing 1), said spherical inner bearing shell (7) being said tibial plateau (11 And is formed integrally with the tibial plateau (11), and the joint surface of the femoral medial condyle (1a) is also formed in a spherical shape, Together with the bearing shell (7) forms one matched ball joint, on the outer side alongside the spherical inner bearing shell (7), allowing the femoral component (1) to rotate, The femoral condyle formed from a plurality of radii in the anteroposterior direction and formed integrally with the tibial plateau (11) or an inlay relatively movable with respect to the tibial plateau (11) It is proposed that a bearing shell (8) that does not match the part (1b) is arranged.本発明は、大腿骨遠位部に固定する、２つの顆状面（１ａ，１ｂ）を有する大腿骨コンポーネント（１）と、脛骨近位部に固定する脛骨コンポーネント（２）と、これら２つのコンポーネント（１，２）の間の複数の滑動面とを備えた膝用体内プロテーゼに関する。当該膝用体内プロテーゼが、天然膝関節の解剖学的および運動学的な特性を最適に複製すると同時に、特に適切な材料の組合せと摩耗発生面の減少とに基づき最小限の摩耗を有するようにするために、本発明では、前記脛骨コンポーネント（２）に関節接合する前記大腿骨コンポーネント（１）全体、ただし少なくとも前記大腿骨コンポーネント（１）の各前記顆状
