The ankle's movement is a result of how the bones fit together. The top of the talus bone fits inside a socket formed by the lower ends of the tibia and fibula, while the bottom of the talus sits on the calcaneus (heel bone), as described in the provided video reference.
Here's a breakdown:
- The tibia and fibula form a socket.
- The talus fits into this socket.
- The calcaneus (heel bone) supports the talus.
This arrangement allows for movements like:
- Dorsiflexion: Lifting the foot up (toes towards the shin).
- Plantarflexion: Pointing the foot down (like pressing the gas pedal).
