Out on a Limb By: Steve Steinberg, freelance writer living in Boston. From: PC Computing - April 2000 - page 188 http://www.pccomputing.com Nowhere are the thumbprints of technology more visible than in the advancements in prosthetic devices. Artificial arms, legs, feet, and hands have been around for centuries, but electronics and computer science have only recently gotten involved with the design of what had previously been purely mechanical devices. The Hot and Cold and the Sense of Feel Sensory Systems created at Hanger Prosthetics & Orthotics (http://www.hanger.com) are at the cutting edge of prosthetic technology For the first time, an artificial limb can feel and react to its environment. With the Hot and Cold system, signals sent from temperature sensors in a prosthetic hand activate a temperature element located on the surface of the skin where the prosthesis is attached. This way, awearer can check the temperature of bathwater without, say, submerging his entire head in the tub. The Sense of Feel system is even more impressive: By using transducers located in the sole of an artificial foot, the brain can sense roughly how much pressure is being applied to the different parts of the foot. The result is that the wearer can balance, walk, and run more easily. Both systems are in the patient-testing stage of development and not yet publicly available. Caption: Thing Lives - Sabolich`s prosthetic hand can let the user actually feel hot and cold. http://www.novacaresabolich.com/hotandcold.html http://www.novacaresabolich.com/sof.html