R. Satava, University of Washington Medical Center, Seattle, WA
Replacement parts and prostheses are moving from the realm of inert materials to complex devices and systems that are active and "intelligent".
For vision we are going from simple glaseses to retinal implantsn and limbs contain many sensors and actuators that are controled with feed-back loops that provide near natural gait instead of hearing aids there are preliminary results with restoration of hearing by regeneration hair cells.
And artificial organs are being grown.