The patient will place his or her leg into the machine, which will then slowly and carefully move the knee. Make sure that the knee joint is right above the pivot, and then strap it into the machine. Once you start the machine, it will slowly move up and down in order to provide you even and constant movement. When you finish the session, all you need to do is to press stop and then wait for the machine to return to the starting position. Un-strap the leg and lift it out of the machine.