I was in the hospital one night and they had me on my feet the day of the surgery (I was the doctors 2nd knee replacement of the day, so in my room just after noon time)

first week of PT SUCKS until your quads wake up and you can actually pick your foot up, after that it HURTS when you stretch it to get range of motion back, but if you don't do it the PT person will and that will REALLY HURT. They are going to get it to bend, so do your part!

Hiking and biking are the best for knee health!