A cushioning device that when implanted provides mobility and wear resisting cushioning to joints within a human body, provides a first component at least in part comprising at least one magnet, a second component at least in part comprising at least one magnet, the magnetic poles of said magnet of said first component, and the magnetic poles of said magnet of said second component, so disposed as to create a repelling force between said first and second components and therefore an opposing movement away from each other, and a third component comprising a magnetically attractable material disposed between said first and second components towards which said corresponding magnets are attracted, said attracting forces balancing and controlling said same repelling force so as to maintain said movement of said first and second components within said predetermined planar degree of freedom.