I had a femoral block for my ACL surgery--although it was good for pain, I fell down at least five or six times trying to walk with no feeling in my leg. I had crutches and a walker, but I had no idea of where my leg was in space and I would just fall over. I think Jo had that problem after her surgery too. So, if you are going to have a block, be very careful about getting out of bed afterwards.
My doc uses a marcaine pump that sticks out of the side of the knee. I had absolutely no pain the first day---then all hell broke loose!! but, when I got back to my room for surgery, I walked into the bathroom---and then the nurse told me that, I had to call her if I wanted to go to the bathroom---and that she would bring a walker!! I did sneak in one more time by myself--but she caught me on the third try and made me walk with the walker--which was silly really---that thing is so hard to push along---I am glad that I didn't really need it. They stopped after the first day and just let me walk around. But, I had MIS surgery too---no quad cut, so easier to walk.