Fallen arches are commonly referred to as flat feet because the feet appear to have a low inside arch, especially when standing. These feet may point away from the midline of the body. Functionally, the arch of the foot is similar in construction to an arched bridge. The center section (arch bone and soft tissue support system) must be strong enough to hold the weight placed upon it. If one or both of the ends that are anchored on shore are weak, the middle section is compromised. If the heel and ankle roll down and inward, the arch will appear flat. If the front of the foot rolls down and in, the arch will also flatten.