Ankle Joint Flashcards

1
Q

How do the phalanges of the hallux differ from the other phalanges?

A

There are only 2 cf to 3

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1
Q

What are the borders of the talocrural joint?

A

Medial and lateral malleoli

Inferior transverse ligament posteriorly

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1
Q

What type of joints are the TCN and subtalar joint?

A

Ball and socket

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2
Q

What is another name for the great toe?

A

Hallux

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3
Q

Which bones make up the TCN and subtalar joint?

A

The talus

Calcaneus

Navicular

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4
Q

Which bones are joined in the Lisfranc joint?

A

Tarsal and metatarsal

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5
Q

Why is the second metatarsal the most common to be fractured?

A

It’s the longest and thinnest

The base is wedged between its adjacent bones

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6
Q

What attaches to the tibial tuberosity?

A

The patellar tendon

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7
Q

Is the foot in inversion or eversion when running?

A

Eversion

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8
Q

What type of joint is the superior tibiofibular joint?

A

Synovial

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8
Q

Why is the axis of movement at the ankle joint oblique?

A

Because the lateral malleolus is longer

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9
Q

What does the plantar aponeurosis joint?

A

The calcaneus and the metatarsal heads

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10
Q

How many arches are there in the foot?

A

3 - 2 longitudinal, 1 transverse

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12
Q

What type of joint is the inferior tibiofibular joint?

A

Fibrous

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13
Q

Why is the ankle more stable in dorsiflexion?

A

Because the articular surface of the talus is wider anteriorly - therefore wedges into the joint more

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15
Q

What is the name of the structure formed by the inferior tibiofibular joint?

A

Malleolar mortise

16
Q

Why does swelling spread anterior in the ankle joint?

A

Because the capsule attaches fairly anterior on the neck of the talus

16
Q

What is the sinus tarsi?

A

A gap between the subtalar and TCN joint - the interosseous ligament runs between it and the run supply of the talus

18
Q

What are the important boney structures at the head of the tibia?

A

The lateral and medial condyles

The intercondylar eminence

20
Q

What movement occurs at the talocrural joint?

A

Dorsi and plantar flexion

21
Q

What are the ligaments of the medial aspect of the ankle joint?

A

The deltoid ligament

The plantar calcaneonavicular ligament aka spring ligament

22
Q

What are the names of the ligaments that stabilise the superior tibiofibular joint?

A

Anterior and posterior tibiofibular ligaments

23
Q

Which tarsal is the most important in the ankle joint?

A

The talus

24
Q

Why is the talus susceptible to necrosis?

A

It doesn’t receive blood for muscle as none attach to it

If the neck of the talus is broken it can lose blood supply

25
Q

Which ligament is most commonly damaged in a inversion sprain?

A

Lateral collateral ligaments - particularly the anterior talofibular ligament

26
Q

At which joints does inversion and eversion of the foot occur?

A

TCN and subtalar joint

27
Q

Why is the fibula so vascular?

A

The many muscle attachments provide their blood supply

28
Q

What malleolus extends more distal?

A

Lateral

29
Q

Where do you find the soleal line? How does it appear?

A

Post. aspect of the tibia

Runs inferio-medially from the proximal tibial-fibula joint

30
Q

What are tarsal bones?

A

Talus

Calcaneus

Cuboid

Navicular

3x Cuneiform