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5005 > Foot and Ankle Imaging > Flashcards

Foot and Ankle Imaging Flashcards

1
Q

Outside of your ankle views, what bones have their own specific views

A
  1. calcaneal
  2. Toes
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2
Q

What is a Weber A fracture ?

A

A fracture of lateral Mal. Below syndesmosis

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3
Q

What is a Weber B fracture ?

A

A fracture of lateral Mal. at the syndesmosis level

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4
Q

What is a Weber C fracture ?

A

A lat Mal. Fracture above the syndesmosis

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5
Q

What is the Weber classification indicating

A

Level of instability - increasing instability from A - C

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6
Q

What is the Pots classification of fractures

A

Describes how many malleoli are involved

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7
Q

How do we check alignment of an AP ankle?

A

Fibula slightly overlapping superolateral talus

Both Mal. In profile

Talocrural jt space open

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8
Q

How do we check alignment of an ankle mortise (oblique) view? (4)

A
  1. Fibula should not overlap talus
  2. TC jt open
  3. Both Mal. seen in profile
  4. 5th MT base should be seen
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9
Q

How do we check alignment of a lateral ankle

A
  1. TC jt open and uniform
  2. The distal fibula should be superimposed by the post. Aspect of the distal Tib.
  3. The Talar domes should be superimposed
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10
Q

What is Bohler’s angle looking for and what is abnormal

A

Calcaneal fracture

Less than 20 degree angle suggests fracture

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11
Q

What is a maisonneuve injury?

A

Proximal fibular fracture and widening of distal syndesmosis and deltoid injury

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12
Q

How do we check alignment of an AP foot

A
  1. Jt space between 1st and 2nd MT open
  2. 2cm of calc. Visualised
  3. Tarsometatarsal jt open
  4. MT bases superimposed
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13
Q

How big should the space between 1st and 2nd ray on foot X-ray be? (Lisfranc)

A

No larger than 2.5mm

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14
Q

How do we check alignment of an Oblique foot x ray? (2)

A
  1. Proximal 1st and 2nd MT overlapping, as well as medial and interm. cuneiforms
  2. Jt space of 3rd to 5th TMT jt open as well as calcaneocuboid jt
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15
Q

How do we check alignment of a lateral foot x ray

A
  1. MT nearly completely superimposed
  2. Fib. Overlapping distal portion of tibia
  3. Domes of talus superimposed
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16
Q

How do you tell difference between lateral foot and lateral ankle x ray?

A

Ankle jt is mostly closed in lateral foot

17
Q

How are zone 1,2,3 fractures of the 5th MT managed?

A

Zone 1 and 2: mostly heal well conservatively with boot/ortho shoe WBAT

Zone 3: NWB and immobilisation - often need surgery due to poor bloody supply

18
Q

What is a March fracture ?

A

Stress fracture in MT neck, commonly in 3-4th

5005 (14 decks)

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