Methods are described for reducing incidence of carpal tunnel syndrome in a person who operates a keyboard, involving monitoring actuation of switches (62), measuring a depression characteristic, (63, 65, 66, 67), comparing the depression characteristic with a predetermined value, and creating a signal corresponding to the number of keystrokes executed with a depression characteristic less than unphysiologic tendon translation denoting tendon instability in the carpal tunnel of a person who engages in repetitive hand motion.
KEYBOARD STRUCTURE FOR ALTERING THE INCIDENCE OF CARPAL TUNNEL SYNDROME