Final answer:
The talocrural joint, which forms the ankle, includes three articulations within its capsule, found between the talus bone and the distal ends of both the tibia and fibula.
Step-by-step explanation:
The talocrural joint, also known as the ankle joint, includes articulations between the talus bone of the foot and the distal ends of both the tibia and the fibula. These articulations are specifically between the talus and the inferior tibia, and the talus with both the medial malleolus of the tibia and the lateral malleolus of the fibula. Effectively, this means there are three articulations within the talocrural joint capsule: The top of the talus with the tibia, and each side of the talus with the medial and lateral malleoli.