I had both knees done for torn meniscus~~(one at a time) that was not so bad, but I had a full knee replacement that has given me fits since it was done almost three years ago. I am not having the other one done!Most people have no problem with theirs, so don't use me as an example.... Good luck with your surgery and do follow up with the physical therapy. I hope you can continue working if you need to, but cement floors will be hard on you. Blessings of light and healing. Let us know how it turns out. Praying for you!!!