I had my right knee replaced Oct. 11 of this year. The Dr. ordered home therapy for 10 days and that worked out very well. The therapist said I could ride my stationery bike after about a week and that also worked out well. I walk and ride the bike everyday, I also do the exercises that are required. It has been 8 weeks since the surgery and I am doing very well and I am pain free. The only thing that I don't like is the clicking and/or popping coming out of my knee. The Dr. says it should stop with time and exercise. I sure hope so as it is uncomfortable and distracting when walking. Good luck and "do what the doctor ordered".