About a third had at least one foot that pronated—rolled inward when running—or supinated—rolled outward.

至少3分之1的人有一只脚是内翻足，即跑步时脚向内翻，或是外旋足，即跑步时脚向外翻。

On the other hand, the median nerve innervates pronator teres and pronator quadratus, which pronate the forearm turning the palm posteriorly.

另一方面，正中神经支配旋前圆肌与旋前方肌，使前臂旋前，掌心向后旋转。