🦶🔩 How we correct flat feet in children: Arthroereisis explained In flexible flat feet, the arch collapses because the heel drifts into valgus and the talus over-pronates. Arthroereisis is a minimally invasive technique where a small implant (screw or device) is placed in the sinus tarsi to limit excessive pronation and guide the foot back into alignment. The most commonly used method is the calcaneal stop screw: 🔹 It acts as a mechanical block to stop heel valgus 🔹 It allows the arch to ref