You might try putting some orthotics in your shoes. This will put the arch back into your feet and take the pressure off the Plantar facia which runs from the front to the rear of the foot. Sometimes people with flat feet pull this Plantar Facia away from the heel. There is no guarantee that this will do the trick, but for the cost of $20.00 and not having to go under the knife, they would be worth the try.