Our son was flat footed with very little arch. His pediatrician was not concerned. 

In preschool, he complained of discomfort when wearing shoes with an arch support. By age 9-10, his condition resulted in continual knee and hip pain. Our doctor explained to us it was just "growing pains" from rapid growth spurts. He was never concerned about his feet. 

Finally, a physical therapist that I worked with educated us in exercises, wrapping support and identification of supportive shoes. This information and strategies stopped his pain. 

As a parent, it is frustrating to know that information was available that would have prevented pain and discomfort in your child, yet you did not know of it. One of the roles of parents is to continuously gather information that may or may not be needed for your child. 

What should parents know about "flat feet"?