The hinge joint present in an ankle comprises three separate joints [[1]], [[1]], and [[1]].

The hinge joint in the ankle is composed of three separate joints: the talocrural joint, the subtalar joint, and the tibiofibular joint. 

These three joints work together to allow for the complex ankle movements required for activities such as walking, running, and jumping. 

The talocrural joint is the main hinge joint of the ankle that allows the foot to move up and down. The subtalar joint allows the foot to move side to side, while the tibiofibular joint stabilizes the ankle and transfers force between the tibia and fibula bones.