Which shoe modification is best for supporting the medial longitudinal arch in flexible pediatric flatfoot?

• A. Thomas heel
• B. UCBL brace
• C. Heel cup
• D. Rigid orthotics

Answer: (A)

For flexible pediatric flatfoot, the goal is to support the arch and reduce excessive pronation with a simple in-shoe modification. The Thomas heel is a medial shoe modification that adds a wedge/raised medial contour at the heel, effectively supporting the medial longitudinal arch and encouraging a more neutral hindfoot position during weight-bearing. This targeted arch support helps maintain arch height without resorting to bulkier devices.

The other options don’t provide the same level of direct arch support through a shoe modification. A UCBL brace is a full orthotic device that offers substantial hindfoot and arch control but is not a standard shoe modification. A heel cup cushions the heel without significantly elevating or supporting the arch. Rigid orthotics deliver strong arch support but are orthotic devices rather than a modification of the shoe itself.

So, the Thomas heel is the best choice when a simple shoe modification is desired to support the medial longitudinal arch in flexible pediatric flatfoot.