In pes planus, the Shaffer plate is primarily designed to achieve what outcome?

In pes planus, the Shaffer plate is primarily designed to achieve what outcome?

• A. Even distribution of plantar foot weight
• B. Increase in medial arch height by 2 mm
• C. Control hindfoot varus with a medial wedge
• D. Reduce plantar fascia strain

Answer: (A)

Pes planus creates uneven loading of the plantar surface as the arch collapses and pronation increases. The Shaffer plate acts as a plantar-based arch support that sits under the midfoot to create a more uniform contact surface across the plantar footprint. By stabilizing and supporting the arch, it redistributes pressure so load is spread more evenly during stance, which is the key goal in addressing flatfoot mechanics. It is not designed to raise the arch by a fixed amount or to correct hindfoot varus with a wedge; those would be separate approaches. While improved pressure distribution can reduce plantar fascia strain as a secondary benefit, the primary purpose of the Shaffer plate is even weight distribution across the plantar foot.

Pes planus creates uneven loading of the plantar surface as the arch collapses and pronation increases. The Shaffer plate acts as a plantar-based arch support that sits under the midfoot to create a more uniform contact surface across the plantar footprint. By stabilizing and supporting the arch, it redistributes pressure so load is spread more evenly during stance, which is the key goal in addressing flatfoot mechanics. It is not designed to raise the arch by a fixed amount or to correct hindfoot varus with a wedge; those would be separate approaches. While improved pressure distribution can reduce plantar fascia strain as a secondary benefit, the primary purpose of the Shaffer plate is even weight distribution across the plantar foot.