Talus

The talus is a tarsal bone in the hindfoot that articulates with the tibia, fibula, calcaneus, and navicular bones. It has no muscular attachments and around 60% of its surface is covered by articular cartilage. 

The talus has been described as having three main components: head, a neck, and a body.

The talar body has a curved smooth trochlear surface also termed the talar dome, which is covered with cartilage. Other parts of the talar body include the central portion, the posterior process and the lateral process.

The talar head is the part that articulates with the navicular bone. The talar head and body are connected by the talar neck, which is inclined downwards distally and medially. 

Articulations
  • talar body
    • tibia, fibula and calcaneus
    • lateral surface: lateral malleolus of the distal fibula
    • talar dome: distal tibia
  • talar head: navicular bone
Attachments
Musculotendinous

No muscles originate or insert on the talus.

Ligamentous

The vascular supply to the talus is considered tenuous due to the lack of muscular attachment to the bone 1.

Lower limb anatomy
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Article information

rID: 31902
Section: Anatomy
Tag: anatomy
Synonyms or Alternate Spellings:
  • Astragalus

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