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Anatomy > The ankle joint > Flashcards

The ankle joint Flashcards

1
Q

What articulates at the ankle joint?

A

Tibia, Fibula, Talus

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2
Q

What type of joint is the ankle joint?

A

Hinge type synovial joint

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3
Q

What movements does the ankle joint allow?

A

Dorsiflexion

Plantarflexion

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4
Q

What binds the Tibia and Fibula distally at the ankle joint?

A

Tibiofibular ligaments

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5
Q

What are the ligaments of the ankle joint?

A

Medial ligament

Lateral ligament

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6
Q

What does the medial ligament of the ankle joint protect against?

A

Over eversion of the foot

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7
Q

What does the lateral ligament of the ankle joint protect against?

A

Over inversion of the foot

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8
Q

How many ligaments make the Medial ligament of the ankle?

A

4

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9
Q

How many ligaments make the lateral ligament of the ankle?

A

3

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10
Q

What are the ligaments that make the lateral ligament of the ankle called?

A

Posterior talofibular
Anterior talofibular
Calcaneofibular

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11
Q

What is important to remember when looking at an ankle fracture?

A

It has a ring structure so is likely to break in more than one place

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12
Q

Which muscles cause Plantarflexion of the foot?

A

Muscles of the posterior compartment of the leg; Gastrocnemius, Soleus, Plantaris and Posterior tibialis

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13
Q

Which muscles cause dorsiflexion of the foot?

A

Muscles of the anterior compartment of the leg; Tibialis anterior, extensor Hallucis longus, extensor digitorum longus

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14
Q

What commonly effects the ankle?

A

Ankle sprain

Pott fracture-dislocation

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15
Q

How does an ankle sprain commonly occur?

A

Forced inversion of a plantarflexed weight bearing foot.

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16
Q

Which ligament is commonly damaged in an ankle sprain?

A

The lateral ligament

17
Q

Why is the lateral ligament commonly damaged in an ankle sprain?

A

It is weaker than the medial ligament

It resists inversion

18
Q

When does a Pott fracture-dislocation occur?

A

When the foot is everted

19
Q

What are the 3 stages to a Pott fracture-dislocation?

A

1) Forced eversion fulls on medial ligaments, fracture of medial malleolus
2) Talus moves laterally, lateral malleolus breaks off OR fracture of the Fibula above tibiofibular joint
3) If tibia is pushed anteriorly, the talus shears off the distal proximal portion

20
Q

What are the 3 other joints in the leg?

A

Subtalar
Talocalcaneonavicular
Calcaneocuboid

Anatomy (45 decks)

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