Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Experimentally determined prosthetic foot stiffness plotted as a function of actuator distance (black) and the stiffness values estimated during walking (gray). Error bars denote standard deviation and perturbations were in the dorsiflexion direction.
