Lower Limb Imaging Flashcards

1
Q

When examining images in MSK, we use AABCSS, which 2 of the following are the As?

1 - A = adequacy
2 - A = autonomy
3 - A = alignment
4 - A = asymmetry

A

1 - A = adequacy
- cover area required, correct patient position

3 - A = alignment
- are bones aligned the correct way

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2
Q

When examining images in MSK, we use AABCSS, what does the B stand for?

1 - B = bilateral symmetry
2 - B = bony landmarks included
3 - B = bones
4 - B = both limbs imaged

A

3 - B = bones
- draw around cortical bone looking for break
- look inside trabecular bone for tumours or breaks

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3
Q

When examining images in MSK, we use AABCSS, what does the C stand for?

1 - C = cartilage or joint
2 - C = contrast
3 - C = complete image
4 - C = correct patient

A

1 - C = cartilage or joint
- narrowing of the joint
- aligned and even throughout

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4
Q

When examining images in MSK, we use AABCSS, which 2 of the following do the SS stand for?

1 - S = superior and inferior views
2 - S = satisfaction of search
3 - S = swelling and oedema
4 - S = soft tissue

A

2 - S = satisfaction of search
- double check everything, even if there is a very obvious fracture

4 - S = soft tissue
- swellings
- tissue damage that indicate bone damage

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5
Q

In the image below, is the left or right an child’s bone?

A
  • right
  • you can see the epiphyseal plate (growth plates)
  • gaps may appear in bones, but this is cartilage that has not become bone yet
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6
Q

Which of the following is the mnemonic used to identify joint changes on radiography in patients with osteoarthritis?

1 - LOAD
2 - LOSS
3 - LOSE
4 - LEAN

A

2 - LOSS

L = loss of joint space
O = osteophytes
S = subchondral sclerosis (thickening of the bone)
S = subchondral cyst

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7
Q

If we were to image both knees of a patient with osteoarthritis, would we see loss of joint space bilaterally?

A
  • unlikely to happen
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8
Q

What is the most likely diagnosis of the image below?

1 - osteoarthritis
2 - RA
3 - gout
4 - SLE

A

3 - gout
- erosion of the joint
- swelling around the joint

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9
Q

What is the most likely diagnosis of the image below?

1 - osteoarthritis
2 - osteomyelitis
3 - gout
4 - charcot foot

A

4 - charcot foot
- common in diabetes
- progressive degenerative/destructive joint disorder
- abnormal pain and proprioception
- deformity but no pain or raised temperature

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10
Q

What is the most likely diagnosis of the image below, where the bone has been eroded away?

1 - osteoarthritis
2 - osteomyelitis
3 - gout
4 - charcot foot

A

2 - osteomyelitis
- common in diabetes and foot ulcers
- only seen after 10-14 days

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11
Q

What is the most likely diagnosis of the image below?

1 - osteoarthritis
2 - osteomyelitis
3 - dislocation
4 - lytic bony metastases

A

4 - lytic bony metastases

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12
Q

What is the most likely diagnosis of the image below?

1 - osteoarthritis
2 - osteomyelitis
3 - enchondroma
4 - lytic bony metastases

A

3 - enchondroma
- benign tumour from cartilage, no treatment needed
- typically found incidentally
- carpals, metacarpals or phalanges
- more prone to fracture

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13
Q

Is the left or right image an adult image?

A
  • right
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14
Q

What type of fracture can we see in the image below?

1 - colles fracture
2 - greenstick fracture
3 - scaphoid fracture
4 - torus fracture

A

1 - colles fracture
- fracture of the distal forearm in which the broken end of the radius is bent backwards.

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15
Q

What type of fracture can we see in the image below, that occurred following a fall on an outstretched hand (FOOSH)?

1 - colles fracture
2 - greenstick fracture
3 - scaphoid fracture
4 - torus fracture

A

3 - scaphoid fracture
- line across the scaphoid bone
- can press on snuffbox to elicit pain

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