Boston, Massachusetts – People with leg amputations have made strides in controlling their prosthetic limbs using brain signals, thanks to a groundbreaking study published in the journal Nature Medicine. The study, conducted by researchers at the K. Lisa Yang Center for Bionics at the Massachusetts Institute of Technology and Brigham and Women’s Hospital, marks a significant advancement in the field of prosthetics.
This breakthrough technology creates a direct connection between a person’s nervous system and their prosthetic leg, allowing for more natural movement and improved ability to navigate obstacles. Unlike traditional bionic prostheses that rely on preprogrammed commands, this new system utilizes the user’s brain signals to control the movement of the prosthetic limb, resulting in a more seamless and intuitive walking experience.
Hyungeun Song, the lead author of the study and a postdoctoral researcher at MIT, stated that this research showcases the first instance of full neural control of bionic walking. By merging advanced robotic technologies with neural signals, individuals with leg amputations can now have greater autonomy and precision in adjusting their prosthetic limbs to adapt to different terrains and obstacles.
The study involved 14 participants, half of whom underwent a novel amputation procedure known as the Agonist-antagonist Myoneural Interface (AMI). This innovative approach helps to address the limitations of traditional amputation surgeries by preserving muscle connections and enhancing muscular feedback, resulting in improved muscle sensations and a more natural gait for the user.
Participants who received the AMI amputation and the new bionic limb reported experiencing less muscle atrophy and phantom pain, as well as greater ease in navigating ramps and stairs. The technology, which includes a prosthetic ankle and electrodes that detect muscle activity, has shown promising results in enhancing mobility and quality of life for individuals with leg amputations.
The researchers involved in the study hope that the novel prosthesis will be available commercially within the next five years, offering a glimpse into a future where advanced technology can restore functionality to individuals who have lost a significant part of their body. This groundbreaking research paves the way for further advancements in prosthetic technologies that prioritize both sensation and movement, ultimately improving the lives of amputees worldwide.