Correct footwear is always important. When we go to the LRS to get shoes, they fit us so our feet are given the correct support they need. There is no standard shoe because everyone's feet is different and every person is different. Arch support and biomechanics are just the tip of the iceberg when we need new shoes.
I've discovered the same should be said about non-running shoes. I don't know how some women can wear stilettos, but I'm not one of them. Before my knee issues, I couldn't wear them because I have weak ankles from spraining them so much playing soccer. Now, if I wear anything above a kitten heal, I feel it in my knee. I don't know if it's the ITBS or a different spot, but it limits the kind of shoes I can wear at work. Plus I hate heals so this gives me a good excuse.
Sunday I finally came to terms that I needed to get rid of my UGGs. Either they weren't providing the support my knee needs, or I've used all the support they had in the 7 years I've had them. Believe me, it hurt when I got rid of them. Those shoes are so warm and it can get plenty cold here. But this weekend proved to me I couldn't wear them anymore. 15 minutes in them and after I got home and was doing stuff in the kitchen, I felt a tweak in my knee. I've been feeling that tweak whenever I wore them in the past few months, and it was time to face facts. So long, UGGs :(