Prosthetic limbs are getting more advanced all the time. Engineers at Georgia Tech are working on an advanced prosthesis that uses AI and machine learning to anticipate what the user is going to do. It has ankle and knee joints. The below video shows it in action:
These guys are also working on a knee exoskeleton for children with cerebral palsy, a hip exoskeleton for stroke victims, and an ankle device for aging adults that restores spring to their step.