05/27/2018 at 11:18 pm #77208
What do you mean by “squatting with my arch in my foot because I have flat feet”?
If you are changing your foot position you can be using parts of your foot you have not actively used before when squatting. This can change position of things upstream since you are changing something at the base/foundation.
Is there knee pain with any other movements/positions?
Have you watched the episodes linked in your prior post?