Knees don't often get much attention, so I figured if anything this might inspire more people to focus on some of the details that are often over-shadowed by more important elements.
You'll have to excuse the very primitive work, as this is more of a documentation of what I noticed. With observation you'll find real knees to be much more detailed and... precise. xD
I'm not sure if this will help anyone, but I hope it does! Have fun drawing knees!
Been looking to work on my own and find it hard to find tutorials on drawing knees that aren't already copyrighted medical text/images. Thanks for this!