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Flashcards in Subtalar Joint Deck (10)
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1

Classify the subtalar joint in terms of structure and function.

Structure - synovial; function - plane joint.

2

What are the articulating surfaces of the subtalar joint?

Posterior surface of talus and superior surface of calcaneus.

3

What are the ligaments that allow stability of the subtalar joint?

Posterior, medial, lateral, and interosseous talocalcaneal ligaments.

4

What are the movements of the subtalar joint?

Eversion and inversion.

5

Which muscles power eversion of the subtalar joint?

Fibularis longus, fibularis brevis.

6

Which muscles power inversion of the subtalar joint?

Tibialis anterior.

7

Which arteries supply the subtalar joint?

Posteriorly the tibial artery, fibular artery.

8

Which nerves innervate the subtalar joint?

Medial and lateral plantar nerves, deep fibular nerve to dorsal aspect.

9

What is the mechanism of injury of a calcaneal fracture?

Crush injury, fall onto heel from a height so talus is driven into calcaneus.

10

What is the complication of calcaneal fractures?

Subtalar joint is disrupted so future arthritis.