距骨, or the talus, is a small bone located in the ankle joint. It plays a crucial role in connecting the leg to the foot, allowing for movement and weight-bearing. The talus sits above the heel bone, known as the 跟骨, and below the two bones of the lower leg, the 胫骨 and 腓骨. The talus has a unique shape that helps it fit snugly between these bones, enabling smooth motion during walking and running. It is essential for maintaining balance and stability, as it helps distribute body weight across the foot. Injuries to the talus can significantly impact mobility and overall foot function.