An orthopedic knee prosthesis (10) with posterior stabilization, comprising: a tibial bearing (12) that can be attached to the tibial tray (15), and which has (i) a platform (16) that includes a medial surface (24 ) of bearing and a lateral surface (26) of bearing and (ii) and a column (30) extending upwardly from the platform between the medial bearing surface and the lateral bearing surface, the column including a rear side ( 34), and a femoral component (14) configured to engage with a surgically prepared surface of the distal end of a femur, including the femoral component (i) a lateral condyle (46) configured to articulate with the lateral bearing surface (26) of the tibial bearing (12), (ii) a medial condyle (44) configured to articulate with the medial bearing surface (24), and (iii) a rear cam (50) placed in an intracondylar notch (42) defined between the lateral condyle (46) and the medial condyle (44), characterized in that the rear side (34) of the column (30) has an upper cam surface (62) and a lower cam surface (64), the upper surface (62) being curved (i) ) cam convexly in the sagittal plane, (ii) the lower surface (64) of the cam being curved concavely in the sagittal plane, and (iii) the upper surface (62) of the cam and the lower surface being curved (64) of convex cam in the transverse plane, the rear cam (50) includes an anterior surface (56) of cam and a posterior surface (58) of cam, in which (i) the anterior surface (56) of cam is concavely curved in the sagittal plane, (ii) the posterior surface (58) of cam is convexly curved in the sagittal plane, and (iii) the anterior surface (56) of cam and the posterior surface ( 58) of cam are concavely curved in the medial-lateral direction, and initially making super contact anterior end (56) of the rear cam cam (50) with the upper surface (62) of the column cam (30) with a first degree of flexion and initially contacting the rear cam surface (58) of the cam posterior (50) with the bottom surface (64)
