project inwardly from the inner surface 6 of the loop 3 and which make contact with the underlying incus 1 the terms projection and spike both in the singular and in the plural will be used interchangeably herein inwardly signifies towards the center of the circle which would exist if the loop described a full circle the surface 6 may be flat curved or complex the loop 3 is attached by a rod 8 to a piston 4 which sits in a fenestra not shown and communicates with the inner ear so as to pass vibrations in a manner approximating that which would occur should all of the ossicles be functioning normally it will be seen that only the points 7 of the spikes 2 make contact with the incus 1 this limits the patch of contact between the prosthesis 5 and the incus 1 which would otherwise broadly occur with the inner surface 6 the piston 4 is coupled to and terminates the rod 8 the loop 3 may take various forms such as a wire ribbon loop or clip disc or other configurations the loop 3 may comprise an upturned end 9 located at that end of the loop 3 which is opposite the rod.