The monitoring of mechanical stress over time in prosthesis
is reported in this work. Silicon thin-film piezoresistive sensors
were applied, attached to a prostheses and their results compared
with commercial strain gauge sensors. Mechanical stress–strain
experiments in compressive mode show that the thin-film silicon
piezoresistive sensors are much more sensitive than the commercial
ones due to their higher gauge factors (−23.5), when compared
to the gauge factors of commercial sensors (2