How was this possible.
The key is a combination of specialized amputation surgery and a non-invasive surface electrode connection to a robotic prosthetic leg, this innovation was detailed in a study published in the prestigious journal nature medicine whose link is in the References; According to Hyungeun Song, co-author of the study and developer of bionic prostheses at the MIT media lab, the results are “surprising.”
Patients with this neural interface can walk at normal speeds, go up and down stairs and slopes, and avoid obstacles naturally and involuntarily. The secret of this technology lies in a surgical procedure at the site of the amputation, creating what researchers call the AMI interface.
Innovative feature.
This procedure involves connecting pairs of muscles and introducing patented synthetic elements, this interface allows for bi-directional communication between the body and the prosthesis electrodes and the muscles send signals to a small computer in the prosthetic leg which interprets these signals and adjusts the movements of the prosthesis in real time, in addition the prosthesis sends information back about the position of the leg, restoring the sensation of proprioception, the perception of where the limb is in space.
What stands out is the particular mode of control, which is above what any person has created, the benefits are not limited mobility, more natural movements can reduce energy expenditure, reduce body stress, and even bring social benefits significant for amputees.
The future of prosthetics is promising with the expectation that this neural interface can be commercialized in about 5 years. Hyungeun, who is also an amputee, sees a future in which prostheses become an integral part of the body, providing a feeling of complete incorporation.
