Don't sweat it. The repair job you're going in for is a piece of cake. I was walking on my repair the night of surgery, feeling better than I had in years. Unfortunately, six months later, I fell up the stairs as i came in the house and undid the surgical handy work. Had a re do to fix it up. Still a piece of cake. Now, however, and totally unrelated, I'm having a knee replacement on the same knee this coming Tuesday.
Ya got it easy - remember the ice, elevation and exercise advise, and you'll be a happy camper.