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Breakthrough Bionic Leg Allows Amputees to Walk Naturally

New surgical technique and advanced prosthetics enable amputees to regain natural gait and proprioception.

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A bionic, prosthetic leg developed in the lab of Hugh Herr at the K. Lisa Yang Center for Bionics at the Massachusetts Institute of Technology.
Dr. Hugh Herr in the lab. Herr had both legs amputated below the knee after a climbing accident in 1982.
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Overview

  • MIT and Brigham and Women's Hospital developed the AMI surgery, preserving muscle signaling to the brain.
  • Patients using the bionic leg showed a 41% increase in walking speed compared to traditional prosthetics.
  • The technology restores proprioception, allowing users to sense their limb's position and movement.
  • Participants navigated real-world obstacles and varied terrains with ease, mirroring natural limb function.
  • Researchers aim to make neuro-controlled prosthetics commercially available within five years.