I'm pretty sure cartilage doesn't grow back dude, I don't have nearly any left in either knee but they both feel pretty damn good. My biggest advice is just don't rush the rehab, you're going to feel like a puss with some of the stupid stuff they make you do but they're having you do it for a reason. I'd expect to have nearly all mobility back within 4 months, that's when I'd start hiking my guts out!! Strengthening your quad and calf muscles will make life much more pleasant!!
Give me a ring anytime if you wanna bullchit about knees man, you still got the number?? Also are you going to need to borrow that ice machine again?? I'm happy to say I have no use for it right now so if you need it just holler...
Justr_86 is about to go in and have his knees worked on too!!
~Z~