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Amputees control bionic legs with their thoughts

By Amy Pollock

Amputees can control their bionic prosthetic limbs with their minds, thanks to tiny implanted myoelectric sensors (IMES) developed by Icelandic orthopedics company Ossur and surgically placed in a patient’s residual muscle tissue.

Ossur implanted tiny sensors in the residual muscle tissue of two amputees that they say trigger movement in the prosthesis via a receiver. Ossur President & CEO Jon Sigurdsson was due to announce in Copenhagen on Wednesday (May 20) that the two amputees are the first world-wide to be able to control their lower-limb prostheses subconsciously.

One of the patients trialing the new implants, Gummi Olafsson, lost his right foot and lower leg years after a childhood traffic accident. He said the implants allowed him to control his bionic leg and foot almost instantly.

“As soon as I put my foot on, it took me about 10 minutes to get control of it. I could stand up and just walk away. Come back, sit down, use my muscles to move my foot in the position I wanted to use it. It was, like you couldn’t believe the feeling when you were moving your ankle. It was really strange. I couldn’t explain it. It was like, I was moving it with my muscles, there was nobody else doing it, the foot was not doing it, I was doing it, so it was really strange and overwhelming,” Olafsson remembered.

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