Body of talus

The body of talus is cuboidal, with five surfaces:

• The superior surface (a.k.a. the trochlear surface) articulates with the lower end of the tibia and forms the ankle joint. It is wider in the front than in the back.

• The inferior surface has a large posterior facet that articulates with the corresponding posterior facet on the calcaneus, forming the subtalar joint.

• The medial surface articulates with the medial malleolus of the tibia.

• The lateral surface features a triangular region that connects to the lateral malleolus of the fibula. The lower point of the triangular region forms a bony projection known as the lateral process of the talus.

• The posterior surface contains a bony projection known as the posterior process, which has a lateral and a medial tubercle. There is a groove between them that allows for the passage of the tendon of the flexor hallucis longus. The posterior surface of the talus is where components of both the lateral and medial (deltoid) ligaments of the ankle joint attach. These components include the posterior tibiotalar ligament (part of the medial deltoid ligament), which connects the medial malleolus to the medial tubercle of the talus, and the posterior talofibular ligament (part of the lateral ligament), which connects the lateral malleolus to the upper section of the posterior process.