The size of the sinus tarsi varies from person to person and it is this that determines how much your ankle can move - and your ideal heel height.
跗骨窦的大小i因人而异，正是它决定了你的脚踝可以活动的范围，和你理想的鞋跟高度。
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It didn't look at shoe heel height, it looked at anatomical heel length, the distance from the back of your ankle joint to the insertion of the Achilles tendon.