A pronated foot with decreased arch would most benefit from which orthotic feature?

• A. Lateral forefoot posting
• B. Medial longitudinal arch support
• C. Metatarsal bar
• D. Medial rearfoot posting

Answer: (B)

Maintaining the height of the medial longitudinal arch is what a pronated foot with a low arch needs most. When the arch collapses during weight bearing, the foot tends to roll inward and the hindfoot everts, which can lead to overpronation and disrupted gait mechanics. Providing arch support along the inside of the foot directly resists that collapse, helps keep the arch height under load, and promotes a more neutral alignment of the foot during stance.

This support improves the windlass mechanism, stabilizes the midfoot and hindfoot, and distributes pressure more evenly across the plantar surface, reducing strain on structures like the plantar fascia and posterior tibial tendon. Other features might address specific alignments or pressure points, but they don’t restore the arch height itself. Lateral forefoot posting or metatarsal bars, for example, shift pressure or adjust forefoot loading without directly elevating the arch, while rearfoot posting focuses more on hindfoot position rather than arch height.