I had awful flat feet as a child... they still are prone to hurting a lot and I walk funny, I sort of put my whole foot down at once if I don't concentrate. I know it contributed to me not liking physical activity. I am glad you caught this with him now.
Speaking of physical activity maybe I will go for a walk now, the weather is just so lovely today.
He likes to ride bikes too...
Did they ever put you in any kind of orthotics? That's what I think they're going to try with Matthew...just a guess at this point though...we're still in the assessment mode.