I had ACL surgery in late Feb. I tore it skiing so I didn't have any problems before I tore it.

I've been slowly increasing my mileage and it's not happy. There could be several causes but one thing is that my saddle, because of my healing knee, was in a half a dozen positions. We think I just have not adjusted to one consistent positon. I've been mostly doing 25-30 mile rides but jumped to a 50 miler and my knee has been talking to me ever since.

Anyway, if your sure your saddle height and position is correct my only suggestion is to be sure you have built a good mileage base early season and increase your mileage slowly. What pedals are you using? Speedplay pedals have kept my knees happy over the years.

Do you have physical therapy to strengthen the muscles. If you do are you doing it on a consistent basis? I backed off mine for a few weeks to ride more, that's another reason the knee could be talking to me, and are you stretching?

I got over confident, thinking I was healed and started ignoring my knee. Well, it told me in no uncertain terms it wasn't healed and I need to pay attention to it. So, I'm back to icing, stretching and strengthening.