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Lower Limb Bones > Talus > Flashcards

Talus Flashcards

1
Q

Body of talus

A

cubical shape
anterior surface blends with neck
other 5 surfaces are free

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2
Q

Superior surface of talar body

A

“trochlea” - pulley shaped

convex anterior to posterior

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3
Q

Articulations of talar trochlea (5)

A

tibial plafond (inferior surface of tibia)
Medial malleolus
Lateral malleolus
Anterior (inferior) tibiofibular ligament
Inferior transverse ligament (deep portion of posterior tibiofibular ligament)

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4
Q

Inferior surface of talar body

A

Posterior articular facet - large oval concave facet for subtalar articulation with calcaneus
Sulcus tali - deep groove at union of body and neck of talus

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5
Q

Medial surface of talar body

A

continuous with trochlea
comma shaped facet for articulation with medial malleolus superiorly
rough inferior to articular facet for attachment of anterior tibiotalar (deltoid) ligament
Many vascular foramina inferior to articular facet

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6
Q

Lateral surface of talar body

A

triangular - apex points inferior

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7
Q

Lateral process of lateral talar body

A

Inferior tapered end of lateral surface

large triangular facet for lateral malleolus

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8
Q

Ligaments that attach to lateral surface

A

anterior talofibular
posterior talofibular
lateral talocalcaneal (anteroinferior to lateral surface)

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9
Q

Posterior surface of talar body

A

Posterior process

ledge of bone projecting posterior and inferior

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10
Q

What tendon grooves posterior process of talus

A

Flexor hallucis longus

divides posterior process into medial and lateral tubercles

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11
Q

Medial tubercle of posterior process attachments (2)

A

lies medial to groove
medial talocalcaneal
posterior tibiotalar (deltoid)

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12
Q

Lateral tubercle of posterior process attachments (3)

A

larger than medial
Posterior talofibular
posterior talocalcaneal
fibulotalocalcaneal

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13
Q

Which accessory bone is associated with lateral tubercle of posterior talar process

A

os trigonum

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14
Q

Neck of talus

A

constricted area between body and head

medial and inferior - represented by sulcus tali

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15
Q

What structures form tarsal sinus/canal

A

sulcus tali

calcaneal sulcus

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16
Q

Attachments to neck of talus

A

dorsal talonavicular ligament (superior surface)

17
Q

Head of talus

A

directed anteriorly, medially and slightly inferiorly

Superior surface blends with neck of talus

18
Q

Anterior surface of talar head

A

contains large ovoid convex facet for navicular articulation

19
Q

Inferior surface of talar head

A

contains 3 facets: anterior calcaneal, middle calcaneal, spring facet

20
Q

Spring facet

A

rests on spring ligament (fibrocartilage)

Lower Limb Bones (8 decks)

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