We are, for the most part, very used to arthroscopic surgery; several small---perhaps a better term is "tiny" incisions and we are back feeling pretty good in a matter of days or weeks.
Now, consider what has been done to you. A rather long incision was made, they pulled apart your flesh to expose the knee joint; they then sawed off two bones; they man-handled your leg and pounded, glued, or screwed things, and then, finally, they closed you up.
Your body is not only healing, but reacting to what has happened to it; it will take some time---quite some time---for it to calm down and return to normal. At seven weeks I was gearing up to return to school---too early I would find out later on. At four months, I still had a slight limp; it would go away in about a month after that. I began to really feel good at six months, and, at a year, I felt all healed and better---more "normal" than I had been in a long, long time.
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