外侧纵弓指数高，基本维持80 %。
评价足内、外纵弓；计算足外侧纵弓，低弓和高弓足发生率。
The incidence of lateral longitudinal arch, low arched foot and high arched foot were calculated.
扁平足：先天性或后天性足纵弓平坦的一种外科病。足和足跟向外侧旋转，足弓消失，形成八字脚。
Flatfoot: Congenital or acquired flatness of the arch of the foot, in which the foot and heel usually also roll outward, resulting in a splayfooted position.
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