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How to treat a broken foot
Move the patient to a safe location and check for other injuries.
If the patient has also suffered a head, neck, or back injury, move him as little as possible and be extremely careful when doing so. Both the safety of the patient and the rescuer are more important than the immediate diagnosis and treatment of the foot injury.
Remove the shoes and socks of both feet and check for common symptoms of a broken foot. Compare both feet side by side to check for swelling or any other differences in appearance.