Sounds like you had arthroscopic (minimally invasive) surgery, done through a couple of small holes with tiny instruments. I had that, for a torn meniscus, about 18 years ago. I actually got to watch it on their scope as it was being done, with the little Pacman nibbling away at the torn parts!
It was about two months before I could play again. Don't push it, and don't shirk on the rehab - do it religiously!