The human foot and ankle is a strong and complex mechanical structure containing 26 bones, 33 joints and more than a hundred muscles, tendons and ligaments. In this video Dr. Irene Davis, one of the foremost experts on the biomechanics of running, explains how the human foot is the perfect marriage of form and function.

The human foot and ankle is a strong and complex mechanical structure containing 26 bones, 33 joints and more than a hundred muscles, tendons and ligaments. In this video Dr. Irene Davis, one of the foremost experts on the biomechanics of running, explains how the human foot is the perfect marriage of form and function.