Did the nerve block when they operated on my hand but they wouldn't let me watch. (Massive infection that I was later told was really gross, so probably a good thing).
Had my knee scoped about 10 years ago for torn meniscus and they did a lateral release and microfracture surgery. They put me under for that. Surgery was no biggie-- 3 holes like the others said. Microfracture has a one year to 18 month full recovery time and even then (as you have seen with lots of athletes) often not a "full" recovery. I still feel a tweak now and then but nothing like before. Of course I'm not trying to jump over people or run through them, but then again I don't have the personal trainers and therapy experts the pros have.