Not sure where this is coming from, but my "knees" are back. Perhaps it's the two-walking/jogging sessions since last Thursday, but the knees never hurt during that exercise, only walking up and down stairs after.
Everything was OK until Friday afternoon. I was going up two flights of steps at work when my right knee just seized up. I was between floors so I had to go either up or down. I waited a few moments and proceeded up - very slowing, leaning heavily on the rail. Since then I've been taking the elevator.
Saturday night, M fell asleep on the way home from a friend's party. I carried her in the house and really felt my knee when ascending the stairs from the garage.
A co-worker (who has suffered many running injuries) thinks it's my cartilage. Whatever it is it sure hurts - now just sitting around. I iced it this morning, after aggravating it during sleep.
Great - I'm 43 years old, but have the knees of a 73 year old, not to mention the cholesterol to match.