Good luck on the knee bronco, some of the guys in the rehab I went to had the knee, it's a little more difficult than the hip because of the need for constant motion and all the mechanicals holding it together. Not as much movement needed for the hip rehab and the muscles do more to hold it in place. Everyone that had it did say it was the best thing they had done. Definitely stay in touch and when your up to it, play around a little in that Georgia clay.