I said yesterday I wasn’t happy with Robert’s injury. It’s not said in the story but his knee cap was shattered while working with Connor. Since it’s the future I didn’t want his dealing with that to look the same way it looks here. I looked at some current day full leg prosthetics, knee replacement diagrams, knee braces, and a hand full of robotic leg designs. It’s kinda a more advanced knee brace that is providing strength and stability to his leg. He can take it off but isn’t as mobile without it.