For some reason, sci-fi writers have an obsession with robots that are little more than flawed, tin-can, replacement humans. Maybe that makes for a better story, but it doesn't really reflect the current state of robot technology, with its emphasis on developing practical robots that can work alongside humans.
Following your exercise session, rest your bruised knee while applying ice. After the first day of injury to your knee, you should apply ice for 10 to 15 minutes, four times per day. On the first day, you can apply ice for 15 minutes of every hour.
Ad. To treat a twisted knee, there are three things you should do as soon as possible after the injury occurs: rest, ice, and elevate. Avoid putting any weight or pressure on the knee by using crutches or a cane when walking. Apply an ice compress for 30 minutes at least three times a day.