I absolutely LOVE these shoes. I have trouble with one of my knees and when I put these shoes on in the morning my knee immediately stops hurting. I think that is because they align my feet under me properly. They have a great arch support which may contribute to the knee comfort.
However, these shoes run very very small. I read that in one of the reviews before I bought them so went a half size larger now I wish that I had bought a WHOLE size larger,so please beware.