I have a dicey ACL--partially torn, what the ortho calls "stretched."

It's been this way for years, and aside from occasionally "going out" on me when I'm walking, it only bothers me when I turn my bike into the wind. After a couple of miles, I'm hurting.

Oddly, it never bothers me when I run or swim; just when I ride.

I've tried several positions with my cleats, moving the saddle up, down, forward, back. It still bothers me.

I'd like to ride bigger mileage, but I seem to top out at around thirty miles, sooner if it is at all windy (I live on the PLains, so this is common). I've only been riding seriously for about about six months, so maybe this is something that will take care of itself as I build up a base, but right now it is frustrating to feel limited. I'dlike to increase my mileage to fifty miles in a single ride, but I can't see that happening anytime soon.

I've googled ACL and cycling, but all I get is stuff that says cycling is good for ACL rehab . Nice to know, but not especially helpful in telling me why I keep having problems.

I was wondering if anyone else had this problem, and if so, have you been able to find a solution?