I had chondromalacia patella about 2 years ago.
that was football induced though.
it hurt about 30mins after activity, because of the grateing it swells up and hurts alot mainly after but can hurt whilst doing stuff.
it meant I couldn't play for 6 months.I was told if I carried on I might need an operation to remove the flaking.
you can sort of see if you have it by laying your leg on the floor(relaxed) so u can move the knee cap around freely, then ummm dunno how to explain this, cup the top of the knee cap(right hand-right knee) ahh bugger it, like this:
then LIGHTLY tense you knee so the cap moves upwards and you should feel quite a bit of grateing, im told there is a certain amount in any knee but its blatent in chondromalacia patella sufferers.
oh and an open patella knee(big blue things) support helps.
im no doctor so don't blame me if you fail to walk afterwards :thumbsup: