Abstract: An apparatus for the preparation of a cement-free implantation of a prosthesis is provided. The prosthesis has a distal part corresponding to a diaphysial region of the femur, a proximal part corresponding to a metaphysial region of the femur, and an intermediate region which corresponds to a metaphysial-diaphysial region. The apparatus includes a rasp of modular design including a conical distal part and first and second proximal parts of substantially different basic shapes and heights. The apparatus also includes a releasable connection means at the distal part for connecting a proximal part to at least one distal part. The apparatus also includes a neutral intermediate element mountable on the distal part of the rasp for driving it and for measuring its degree of recessing on a graduated scale.

Abstract: Test prosthesis system (1) for the insertion of a so-called press-fit-effect femur prosthesis for cement-free implantation into a femur bone (2) in a region (3) in which the press fit effect is preferably obtained and which corresponds to a diaphysial region, the height of which differs depending on the morpho type, characterized in that it consists of a set of at least two shafts (4, 5) each of which has a conical distal region (4, 5) with the same cone angle but a different diameter (D) the first conical region with a smaller maximum diameter D having a proximal region congruent to (i.e. overlapping in size and shape) with a distal region of a second conical region of a second shaft with a larger maximum diameter of the conical region.

Abstract: An Apparatus for the preparation of a femur bone for the cement-free implantation of a prosthesis having a so-called press-fit-effect, the prosthesis having a distal part (2, 2A) corresponding to a diaphysial region of the femur (1, 1A), a proximal part (3, 3A) corresponding to a metaphysial region of the femur and an intermediate region (4, 4A) in which the press-fit-effect is preferably provided and which corresponds to a metaphysial-diaphysial region, with the height of the prosthesis being variable depending on the morpho-type and degree of bone damage is described which is characterized in that the apparatus consists of a modulatable rasp (10) including a plurality of parts, at least one of which has a conical distal part (10A) of a single size and of a single shape, there being at least first and second proximal parts (10B) of substantially different basic shapes, each of said first and second proximal parts being provided in a plurality of increasing heights (H), there being releasable connection means