Which combination of ankle-foot orthoses is used to correct excessive pronation and includes varus posts, Arizona AFO, SMO, UCBL, and AFO with medial flange?

• A. Varus posts, Arizona AFO, SMO, UCBL, AFO + medial flange
• B. Valgus post, lateral wedge, AFO + lateral flange
• C. AFO + medial flange
• D. Ankle stirrup with heel cup

Answer: (A)

Controlling excessive pronation relies on orthoses that resist hindfoot eversion and support the medial arch, guiding the foot toward a more neutral alignment. A varus post provides a hindfoot inversion moment, countering pronation by tilting the heel into varus during stance. The Arizona AFO offers rigid, comprehensive ankle-foot control, which is helpful when more substantial correction is needed. The SMO (supramalleolar orthosis) sits above the malleoli but still controls subtalar and foot alignment, making it suitable for pronation issues in lighter or pediatric cases. The UCBL reshapes and supports the foot from underneath, realigning the calcaneus and supporting the arch to reduce pronation. An AFO with a medial flange adds medial containment, increasing resistance to eversion and further stabilizing the foot.

Together, these options represent a range of devices used to correct excessive pronation by enhancing medial support and hindfoot varus control. Choosing a valgus post or lateral concepts would worsen pronation, so they’re not appropriate for this goal.