A study published in the journal Science Translational Medicine finds that combined technological advances in robotics, computerization, batteries and electric motors are leading to a new generation of prosthetic legs that can duplicate natural movement when users are negotiating stairs and uneven ground. Studies show that powered lower-limb prostheses are more efficient and wearers have fewer falls linked to hospitalization. These new prosthetic limbs connect in noninvasive and invasive ways, from sensors attached to muscles to electrodes implanted in the brain.

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