Jerry, odds are you'll feel like someone knee capped you with a crow bar but they will want you up and starting to walk the next day. You'll be real stiff but they even wanted me climbing my stairs the next day. It's more of not being able to bend it thing. Like said in about a week you'll feel a lot better and three weeks all's pretty good. I feel jipped that I didn't get injected with acid though. Maybe they felt there was enough left over in my system from the 1970's. Oh, one thing that was kind of weird....they gave me a marker and I had to write YES on the leg to be scoped and NO on the good leg. Glad I got it right.