Flat foot seems to be the most common orthopedic issue seen in pediatrics. It must be treated in childhood otherwise it can cause serious health problems.
Treatment means regular physiotherapy for month, maybe even years . But physiotherapy is boring. Especially for kids. Even adults need some extra motivation.
On the other hand, the limited availability of trained professionals is a well know phenomenon in every field of health care. Many families do not have the physical and financial means to visit a therapist as often as required.