Bars; Drops vs Risers

TheBrick(Tommy) medicine is far from an exact science, I am sure if you do some physio to beef up the muscles and tendums round your knees you will do a hell of alot better than the average 10 years they give your knee. You are not the average man! I have no knowledge to back this up of course but plenty of hear say and conjecture. Good luck with the kee.

It's the snowboarding/bmxing/skating/mountain biking/climbing that concern me.
That said, find me in 10 years, I'd bet I'm still doing them all. Stubborn doesn't even come into it.