Trekker wrote:Where is the knee pain located? ... Depending on your answer, I can probably give you a fair idea of where your problem is located.
Well now, that's an offer I can't refuse! Hang on, let me go up to the second floor (...walks up stairs...). OK, doesn't hurt much now, but here's what I found: first, only the left knee hurts (either knee can hurt, but it's rarely both. When one knee hurts, it usually does so for at least several weeks, sometimes months). The pain appears to be right on the edge of the kneecap, low and on the right side (that's the "in" side). [Sorry, I'm a biologist but a plant biologist and so never really got completely clear about words like "medial" and "lateral," so I can't sling the proper lingo.] I don't hear any popping sounds now, but frequently when I'm finished with a day's jog both knees will emit a sort of squishing or gurgling or creaking sound, very softly, when I sit down or make other large knee movements.
The fact that my knee doesn't hurt when hiking is interesting. I can see why hiking on uneven terrain would be less stressful than the extremely repetitive motion of either jogging or stair-stepping (or walking up stairs), but what's interesting is that after a day of hiking the knee actually seems to recover, that is, it hurts less (or not at all) for the next few days of jogging or stairstepping. Hmmm...