Which AFO feature is attached on the medial side to restrain pronation?

Which AFO feature is attached on the medial side to restrain pronation?

• A. AFO: valgus correction strap
• B. AFO: Varus Correction strap
• C. AFO: Dorsiflexion spring assist
• D. Molded AFOs

Answer: (A)

Pronation involves hindfoot eversion, so the most effective way to restrain it with an AFO is to add a correction strap on the medial side. This valgus-correcting strap, when tightened, provides a medial support that creates a varus (inversion) moment at the hindfoot, counteracting eversion and helping keep the foot aligned during stance. The other features don’t specifically address hindfoot eversion: a strap on the lateral side targets different alignment, a dorsiflexion spring assists uphill in dorsiflexion rather than restraining hindfoot motion, and molded AFOs are a general form without the targeted medial corrective action.

Pronation involves hindfoot eversion, so the most effective way to restrain it with an AFO is to add a correction strap on the medial side. This valgus-correcting strap, when tightened, provides a medial support that creates a varus (inversion) moment at the hindfoot, counteracting eversion and helping keep the foot aligned during stance. The other features don’t specifically address hindfoot eversion: a strap on the lateral side targets different alignment, a dorsiflexion spring assists uphill in dorsiflexion rather than restraining hindfoot motion, and molded AFOs are a general form without the targeted medial corrective action.