Foot Progression Angle Modulates Three‐Dimensional Lower‐Limb Biomechanics in Flexible Flatfoot: Kinematic–Kinetic Patterns and Clinical Implications. - Shen, Linxiao; Sun, Dong; Fang, Yufei; Lu, Zhenghui; Li, Xin; Xu, Yufan; Song, Yang; Zhu, Chengyuan; Cen, Xuanzhen; Fekete, Gusztáv; Jemni, Monèm; Gu, Yaodong (Journal of Foot & Ankle Research, 2026)