Child has flat feet causing pain in feet and knees even at rest and ankles during active play ankles look like bowed inwards what kind of dr needed?

Podiatrist: Podiatrists are trained in analyzing foot and gait abnormalities in children and adults. Some podiatrists prefer to work with adult patients, so inquire if yours has a special interest in treating children. And don't accept "they'll outgrow it". They almost never do.

Podiatrist or:: Pediatric orthopedists. Both specialties can deal with flatfoot in kids.