Originally Posted by
clubman
I've had my right knee scoped twice (last time 7 years ago) and the left one once before that. I rode fixed gear many(most?) days since then until this year. I've re-injured my right knee and I find it very difficult to spin. The MRI suggests that my cartilage is just worn out. (soccer and ultimate frisbee) Knee replacement is looming. So I'm on a road bike until it sorts out. I'm 52.
I have a friend who was about to get pro soccer, but he bailed because he wasn't quite good enough - and he was telling me that the game is full of very unnatural movements for the knee. It's a lot of repeated stresses. Soccer and basketball are really hard on your knees.