Abstract
Impact load applied to a normal knee joint will be attenuated by its visco-elasticity but one applied to an implanted knee will not be because of the rigidity of the components and will break cancellous bone in the bone-prosthesis interface.
A new prosthesis has been worked out which includes silicone rubber and has a shock absorbing mechanism. Testing of the fatigue tolerance and the bio-compatibility of the silicone rubber hadgood results. In the dropped weight test, the new prosthesis implanted in the cadaver knee joint attenuated the impact load more than the conventional knee prosthesis.
On this basis, we will be able to develop a new viscoelastic prosthesis (Shock Absorbing Knee Prosthesis) which will result in less mechanical loosening of implanted knee joints.
