"Anklebot" helps determine ankle stiffness

For most healthy bipeds, the act of walking is seldom given a second thought: One foot follows the other, and the rest of the body falls in line, supported by a system of muscle, tendon, and bones.

http://www.rdmag.com/news/2013/10/%E2%80%9Canklebot%E2%80%9D-helps-determine-ankle-stiffness