I had MASSIVE knee surgery three years ago. There are a few weeks (not many) of down time.. you use the leg but its not a picnic. The upside is I no longer worry if my knee is going to leave me when I least expect it and have a face plant. It is solid. I have to do my other knee also but with one good knee I am hesitant. Maybe she cant snow board again. The upside however is not living in pain all the time. And that is a HUGE upside. My brother had full knee replacement 10 yrs ago and has no trouble at all with his knee now. No pain, no issues nothing. Its not a pretty thing. You go black and blue from hip to toes but its a short time thing. You get your life back. So I say suck it up, take the small list of you cants and look hard at all the you cans. I can walk now. I can go upstairs and down stairs, I dont worry if my leg will pop out at any moment.. its a gift. So my vote: YES DO IT. YOU WONT REGRET IT