Trim away the bent horn tubules to get down to the straight ones, and deal with each foot on its own merits, says a noted farrier and teacher
You look at the foot and there it is: a weak heel that you suspect might lend itself to the development of a foot with long-toe, low-heel syndrome. The bad heel might have been caused by trimming the heel too low or by a naturally weak heel prone to collapse. Or it could be caused by excessive wear at the heel that, studies have shown, can be brought about by a shoe, especially one that’s too small, that exposes only the heel to wear.