Sustentaculum tali

Dr Henry Knipe and Dr Jeremy Jones et al.

The sustentaculum tali is a horizontal shelf that arises from the anteromedial portion of the calcaneus. The superior surface is concave and articulates with the middle calcaneal surface of the talus. The inferior surface has a groove for the tendon of flexor hallucis longus.

Several ligamentous structures attach to the sustentaculum tali:

Related pathology

The sustentaculum tali is typically involved in cases of tarsal coalition, specifically talocalcaneal coalition and subtalar coalition. In cases of talocalcaneal coalition, the complete C-sign can be seen on a lateral radiograph where there is bridging between the talus superiorly and the posterior portion of the sustentaculum tali inferiorly.

Anatomy: Lower limb

Anatomy: Lower limb

Article information

rID: 23630
Section: Anatomy
Tag: refs, foot, refs
Synonyms or Alternate Spellings:

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Cases and figures

  • Figure 1: calcaneus (Gray's illustration)
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  • Case 1: with talocalcaneal coalition
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