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.

Abstract: A trochlea implant for a femoro-patellar prosthesis, the implant being L-shaped, comprising a trochlea branch and an inter-condyle branch, the posterior face of the implant including a rectangular longitudinal rib designed to be engaged in a groove of corresponding shape machined in the anterior face of the trochlea to improve the stability of the prosthesis.

Abstract: A process for the measurement in vivo of the degree of bone consolidation, characterized in that it consists of implanting directly on the surface of the bone a transmitter with its power supply circuit, the oscillation frequency of the transmitter being capable of varying about a predetermined value during stresses applied to the bone to which the transmitter is secured. Signals emitted by the transmitter are received on a suitable external receiver positioned adjacent the transmitter. The receiver output signals are utilized for various purposes, such as checking, measurement and recording.