Prosthetic leg can 'change gears' to make going up stairs easier
https://www.newscientist.com/article/2347898-prosthetic-leg-can-change-gears-to-make-going-up-stairs-easier/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
Prosthetic leg can 'change gears' to make going up stairs easier