Tearing Sensation in Quads

So I’ve had this for a while now, thought I’d post here to find if it’s anywhere near normal or if anyone has experienced this too.

I noticed that whenever I’ve had my knees extended for a while and I suddenly bend them (so when my quads go from being shortened to lengthened), I feel some funny “pain,” at the level of insertion with the knee, that I can only describe as feeling like my quad could suddenly tear apart. That usually has me slow down the movement and the feeling goes away instantly.

This almost feels as if the muscle is being stretched, although I can tell the feeling isn’t that of when I actually stretch out the quads.

I cannot recreate this situation voluntarily, and again it happens sometimes when I go from straight knees to bent knees.

What could this be?