Dynamic Function of Multi-Articular Joints in the Foot and Ankle

人类的脚是一个非常复杂的多关节结构，可以支撑巨大的重量，同时无缝地适应地形的变化。脚由26块骨头、33个关节、20块肌肉和100多条韧带组成，它能够调节自己的硬度，成为一个移动的适配器、一个刚性的杠杆，或者介于两者之间。由于其复杂性，人们还不能完全理解足部在奔跑、跳跃甚至行走等高要求活动中是如何完成其许多功能的。我们建议利用一种独特的方法，结合高速骨骼成像，让我们在脚运动时看到脚的内部。本提案的目的是了解足弓是如何工作的，并提高我们使用高速骨骼成像技术研究多关节关节的能力。

The human foot is an amazingly complicated multi-articular structure that can support tremendous weight, while at the same time seamlessly adapting to changes in terrain. Consisting of twenty-six bones, thirty-three joints, twenty muscles, and over one hundred ligaments, the foot is able to adjust its stiffness to become a mobile adapter, a rigid lever, or something in between. Because of its complexity, it is not fully understood exactly how the foot accomplishes its many functions during demanding activities like running, hopping, or even walking. We propose to utilize a unique approach coupled with High-Speed Skeletal Imaging to allow us to look inside the foot while it is moving. The purpose of this proposal is to understand how the arch of the foot works, as well as improve our ability to study multi-articular joints using High-Speed Skeletal Imaging technologies.