一个人的纵弓和横弓的解剖结构和形状可以决定该人容易受到的伤害类型。一个人的足弓高度取决于其足舟骨的高度。纵弓塌陷导致扁平足。低纵弓或扁平足的人在站立或走路时较容易足旋前(英语:Pronation of the foot)与足外翻,这使人易患有足跟痛、足弓痛、足底筋膜炎以及拇指外翻。扁平足的人会比较难做需要用脚趾支撑体重的运动。
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