Improving accuracy of bone resections using robotics tool holder and a high speed milling cutting tool

The use of non-cemented prosthetic components in implant surgery is demandi ng a high quality of bone beds in order to allow for a good level of osseoi ntegration. Two parameters are significant in the evaluation of the quality of the host bone: roughness, which reports on the presence of gaps and pee ks, and flatness, which reports on the total percentage of bone which lies in a given interval from the prosthesis. Robot assisted cutting of 32 pig f emours and tibiae was performed using various techniques and options. This paper demonstrates roughness and flatness can be taken of the order of the limits necessary for osseointegration, by using a milling cutting tool moun ted on a strong support, in this case a robot arm, improving on the results obtained by similar studies referred to hand sawed bones by 10 times.