Why does a medial calc slide work?

Why does a medial calc slide work?

• A. Increases lateral arch support
• B. Reduces excess force on the medial arch
• C. Increases blood flow
• D. Stabilizes the calcaneus

Answer: (B)

The main idea is that this procedure realigns the hindfoot to change how load is carried through the foot. By sliding the posterior part of the calcaneus medially, the hindfoot valgus is reduced and the line of force during stance moves closer to the hindfoot’s axis. This redistribution decreases the abnormal stress that was being transmitted through the medial longitudinal arch, so excess force on that arch is relieved. It isn’t about increasing blood flow, nor is it primarily about adding external arch support; and while it can help overall stability, the key effect is unloading the medial arch by improving hindfoot alignment.

The main idea is that this procedure realigns the hindfoot to change how load is carried through the foot. By sliding the posterior part of the calcaneus medially, the hindfoot valgus is reduced and the line of force during stance moves closer to the hindfoot’s axis. This redistribution decreases the abnormal stress that was being transmitted through the medial longitudinal arch, so excess force on that arch is relieved. It isn’t about increasing blood flow, nor is it primarily about adding external arch support; and while it can help overall stability, the key effect is unloading the medial arch by improving hindfoot alignment.