At 65 I'm starting to have knee issues. Feels like some form of arthritis. The problem is in the joint, but it Fs up all the muscles and tendons in the area trying to compensate for the joint. Ignore it too long and the surrounding stuff atrophies.

The reason I bring this up is I had a hip replaced about 3 years ago now. Took me a good 9 months of muscle/tendon and chiropractor visits before an X ray showed the hip was gone. Learned words like iliotibial and piriformis, took up yoga, adjusted everything on the bike, was even considering shorter crank arms. The hip replacement fixed everything.

Just think, if I hadn't fallen drunk out of bed and tweaked my back, I never would have had my hip x rayed.

Can't hurt to see and orthopedic and get some imaging done.