I often get chronic knee pain riding on most bikes at the 1 hr mark. I don't have any problems with them under normal circumstances... just bikes. I narrowed it down to this:
Well, only two things help it so far:
1. lots of anti-inflammation drugs (I'd save that for the odd very long ride)
2 A really tight support around the knee (usually my left)
SO, i got a bit over enthusiastic over the tightness of the knee support on the commute to work this morning. Of course, because the knees bend on the bike (considerably as I ride a sports bike)... well, I only discovered how tight (too tight) the support was when my left leg started going dead on the motorway.. then I'd get pins and needles too hehe! So... I rode for about an hour like that, just managing it safely. Hopefully never again. Then on the way home I didn't tighten the support enough, and when I got off the bike it felt like I had knives inserted into my left knee cap (I'm serious!)... the pain is very comparable to having a triple fractured ankle... its bad. But, I like bikes (especially sports bikes) too much.