The talus is an irregularly shaped bone which links the foot and the leg through the ankle joint. It has three main parts:

Body - cuboid-shaped part of the talus that comprises most of its volume;
Head - spherical part directed anteriorly and medially; has an articular surface facing the navicular bone;
Neck - the narrow part of the bone proximal to the head;

The body of the talus features several landmarks and articulating surfaces, such as:

Trochlea of the talus, which features:
- Superior articular surface of the talus - articulates with the inferior articular surface of the tibia;
- Three inferior articular surfaces (for the calcaneus) - the anterior, middle, posterior articular surfaces on the inferior side of the talus for the attachment of joints connecting the talus with the calcaneus;
- Sulcus tali - a groove on the inferior surface of the talus between the posterior and the middle articular surfaces. The talus participates in forming the tarsal sinus (together with the calcaneus), which is an indentation formed by the sulcus tali and the calcaneal sulcus;
Posterior process of the talus - consists of the lateral and medial tubercles, which are separated by a groove for the flexor hallucis longus tendon.
Medial malleolar surface - almost sagittally oriented surface of the talus that articulates with the medial malleolus (tibia);
Lateral malleolar surface - articulates with the lateral malleolus (fibula).

Unlock with Premium

Talus