It's hard having both of them weak, but it's the years of abuse that they've taken. I have arthritis in both of them now, as well as very little physical strength. They'll just give out on me with no warning, which in winter, not a good thing. =(
Then again, I'm use to them, so...
I start at the tender age of 4, until I was 16 and blew out my right knee and couldn't dance anymore sad
But here the worst part that knees "fine" now and two years ago I tore all the major ligaments in my left knee and surgery and PT and its still really weak,