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Flashcards in MSK radiology Deck (20):
1

What important features of the clinical history are useful in relation to radiology?

High/low velocity injury
Mechanism of injury (impaction, rotation, etc)
Site of bone tenderness
Presence/absence of deformity
Age

2

Most fractures only require two x-ray views. Name these and the views that they require

Cervical spine (AP, lateral and odontoid peg)
Scaphoid (AP, lateral and two obliques)

3

In relation to fracture which features must you assess?

Site of fracture along bone
Spiral?
Transverse?
Comminution?
Extra or intra-articular?
Angulation?
Displacement?
Impaction?
Avulsion?
Bony alignment
Soft tissue abnormality

4

Which three structures can mimic avulsion fractures?

Sesamoid bone of the thumb
Accessory ossification centres (children)
Old non-united fractures

5

What is the posterior fat pad sign?

Fat pad normally sitting anterior to the distal humerus is displaced posteriorly by an elbow effusion

6

The posterior fat pad sign can be normal in obese patients. T/F

False - never normal

7

Children's soft tissues commonly avulse. T/F

True

8

Which three fracture types are unique to children?

Greenstick
Buckle
Bowing

9

What is a physis? Why is this important in relation to imaging?

Growth plate! Space between physis and epiphysis can mimic a fracture

10

Describe the Salter-harris classification of growth plate fractures

type 1 - S - straight across
type 2 - A - above
type 3 - L - lower
type 4 - T - through/two
type 5 - ER - erasure of growth plate (cRush)

11

Bones, soft tissues and bony alignment must all be checked even when an abnormality is found in one area. T/F

True - multiple problems common

12

If a bony ring is ruptured expect to see more than one fracture/soft tissue injury. T/F

True - examples include forearm, vertebrae and pelvis

13

When might you suspect pathological fracture?

When fracture seems out of proportion to injury velocity

14

How do scaphoid fractures present? Which sex more commonly gets them?

Pain in the anatomical snuff box
Male

15

Where is the most common site for a scaphoid fracture? What is the risk?

Scaphoid waist (mid-scaphoid)
Avascular necrosis

16

Surgical neck of the humerus fractures pose an injury to which nerve?

Axillary (badge patch injury)

17

A supracondylar fracture poses a risk to which artery?

Brachial

18

What part of x-ray assessment is most important with regard to detecting a supracondylar fracture?

Alignment

19

If a scaphoid fracture is suspected clinically but not seen on x-ray what is done?

Repeat x-ray after 10 days

20

What is a bennett's fracture?

Intra-articular fracture of the first metacarpal bone

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