I had one a few years ago, can't remember the name of what they removed, but it wasn't cartilage so in theory it should have been quick and easy.
I think it was about 6 weeks for the swelling to go down and I saw the consultant, then it was light turbo stuff and swimming for quite a while as I could only just get it over TDC. If you've got movement back sooner then you're probably in a better boat than I was.
I think the opperation was May, and I went on a propper MTB ride in September but it was a year at least before I could go out for rides regularly without worying about the cumulative effects building up and resulting in another lay-off.
My advice would be to take it easy.