Abstract: A device for the axial stabilization of a cutting means, used to make at least one cut at one end of a bone with a view to the fitting of a prosthesis in bone surgery. It includes an axial centering rod that is introduced partially into the intramedullar canal of said bone and is designed to receive said one cutting means. The centering rod is provided with an anchoring thread so as to form a anchor bolt that is axially stabilized in a direction parallel to the axis of the rod. A clamping device is mounted to the rod and axially clamps the cutting means inst the bone.

Abstract: A kneecap cutting guide device for the fitting of a total knee replacement includes, a trial femur component having an artificial trochlea, a side hole made on at least one edge of said trial femur component, and a central hole made in the center of said trochelea. An ancillary device includes a fastening dog-point designed to cooperate with the side hole of the trial femur component. A kneecap plate is designed to be placed in a position of resting on the kneecap and a mechanism to center the plate in relation to said central hole of the artificial trochlea is provided. The guide device further incorporates means to shift the kneecap plate, enabling a crosswise motion with respect to said trochlea and an axial motion parallel to the central hole. There is also a mechanism for locking the plate in position and a surface for guiding a blade to cut the kneecap parallel to the plane of the trochlea.