Abstract: A method for assembling a total knee prosthesis is described, wherein portions of femoral and tibial implants, which are referred to as common portions and are each attachable in a femur and in a tibia of a knee, respectively, are assembled, and interchangeable portions are selected for adjustable assembly onto said common portions for each implant, respectively, depending on the type of prosthesis desired, some for a first posterior stabilization assembly configuration, and the others for a second rotary hinge assembly configuration.

Abstract: Knee prosthetic, incorporating a prosthetic femoral component designed to be fixed to the furthest or nearest extremity, of the femur, a tibial prosthetic component designed to be fixed to the nearest or upper extremity of the tibia and at least one intermediary mobile meniscoid prosthetic involving a lower surface working together by sliding with the complementary upper surface of the tibial component, and at least one upper concave surface working together by sliding with a lower condyloid convex surface of the femoral component, characterised by the fact that the upper surface of the tibial component and the lower surface of the meniscoid component are flat and sloped in the same angle from the top at the rear towards the front.