I notice that if i'm doing something weird like twisting my body to face forward and tucking my back knee in it tweaks my front knee
I've actually got shit knees (they pop out of socket once in a while) but with some time spent tweaking angles, and stance width I've got it dialed and don't usually have probs.
I also work on knee strengthening exercises, one legged balance stuff mainly. I do notice the difference in stability when i'm being lazy and not doing it