Energy recycling artificial foot is a step in the right direction for amputees

Most of us take it for granted, but walking isn't as simple as it looks. With the natural human gait the ankle exerts force to push off the ground. A typical prosthesis doesn’t reproduce the force exerted by a living ankle, resulting in amputees spending much more energy in comparison to walking naturally. A new prototype artificial foot recycles energy that is otherwise wasted in between steps to significantly cut the energy spent per step, making it easier for amputees to walk.