I was diagnosed with osteoarthritis in my knees a couple of weeks ago. I started taking a prescription NSAID (meloxicam) then, and it has worked wonders for me. But, I've been having the pain for at least 4 years, and I just got around to going to the doctor--that explains how bad the pain wasn't, I guess. (Really I just knew he'd say I have arthritis and to take NSAIDs, which is exactly what happened. I'm happy to know for sure, and not worry about other things.)
Anyway, the knee pain is what started me riding a bike again after a 20+ year hiatus--that, and I got a bike kinda by accident. The more I rode, the better my knees felt. I do take really good care of my knees by not doing things I know will hurt them, but I also run a mile +/- once or twice a week and do 100 jumping jacks once a week. I never ever thought I'd be able to run, and the doctor doesn't really recommend it. However, I think those kinds of activities, while I'm still young enough to be able to work up to it, have helped my knees feel better. The tendons and muscles are stronger and there's no imbalance anymore from mostly sitting in the recliner! In fact, my touring bike, which is set up differently than my road bike, kinda forces me to mash more than I used to, and that actually makes my knees feel GOOD!
So, if you're not a "senior" and you're just beginning to get symptoms, I'd say work up to a sustainable level of exercise, and you'll keep more fitness as you age. (duh.)
Karen
~~~~~~~~~~~~~~~~~~~~~~~~~~
insidious ungovernable cardboard