I have had one knee replaced 6 years ago. It's a little stiff but the big pain is gone. I tell my other knee, "shape up, look what happened to your buddy". I was in PT for 10 days and walked out and got in our car, hubby driving. I was back sewing at the machine in 4 weeks for for couple hours a day. Now the pain pills I was given at the start made me break out in hives. Very allergic, so guess I'll never get into bad drugs. I was off those in about 4 days and on a much lighter and nicer pain pill, my hives cleared up. I think even my hair itched. Follow your therapy and you'll do great. I was back driving our car in 3 months.