Do you have a grinding or fizzing sensation, or popping noise when you move / straighten your knees?
It could be down to sub optimal tracking of the kneecap (patella).
More often than not the rectus femoris is dysfunctional, in a movement compensation pattern either with itself, or it’s synergists / antagonists.
Correcting imbalances around the knee, hip and potentially ankle as well can help a great deal.
Image credit Pexels free
Experience the difference – A refreshingly different approach to pain and dysfunction, so you can breathe better, move better, to live better.