Smart knee
The knee isn't a part of the body you'd expect to think for itself, but the RHEO, a prosthetic knee developed by MIT artificial intelligence researchers Hugh Herr and Ari Wilkenfeld, really does have a mind of its own. Earlier electronic knee systems usually had to be programmed by a technician when the patient first put them on. The RHEO knee, on the other hand, creates realistic, comfortable motion on its own, by learning the way the user walks and by using sensors to figure out what kind of terrain they're walking on. The system makes walking with a prosthetic leg easier and less exhausting.
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