Imaging of the Upper limb Flashcards Preview

Hugh's MD1 Musculo-Skeletal > Imaging of the Upper limb > Flashcards

Flashcards in Imaging of the Upper limb Deck (20)
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1

What is the diaphysis of a bone?

The shaft

3

To get a side on view of the glenohumeral joint how must you position the patient?

Slightly externally rotate them

3

What is one of telling if a line on a plain film is a fracture or unfused epiphysis?

Look for displacement of the fat pads

4

How do radiolucent structions appear on plain film?

Dark

4

Which is the first epiphysis to appear at the elbow joint?

Capitulum and lat trochlear

5

Where else are there secondary ossification centres around the shoulder?

Greater and lesser tubercle of the humerus

Acromion

Outer edge of the clavicle

Glenoid

6

Which two lines make up the radiocarpal angle?

A line between the styloid processes of the radius and ulna and through the first three carpals bones

8

What is the metaphysis of a bone?

The area between the diaphysis (shaft) and head (epiphysis)

8

Name the epiphysis of the elbow joint?

Lat and med epicondyles

Capitulum and trochlea

Radial head

Olecranon

 

9

What is the epiphysis of a bone?

The head

10

What are the major differences in tissue appearance between T1 and T2 weighted images?

Fluid appears dark in T1 and bright in T2

Fat is brighter in T1 cf to T2

12

What are the three structures you can use to triangulate the position of the glenoid fossa?

Coracoid process

Acromion

Blade of the scapula

13

What is a epiphyseal scar?

A radiodense line seen on radiographs between the metaphysis and epiphysis which represents a closed growth plate

14

What is physis another name for?

Epiphyseal plate - hyaline cartilage at the metaphysis of children and adolescents

15

What do elevated fat pads indicate?

There is fluid in the joint > fracture is likely

16

How do radio-opaque structures appear on plain film?

White

17

Why does air appear black on plain films?

Because the radiation can travel straight through it and hit the film

18

What keeps carpals bones alined during deviation?

Intercarpal ligaments

19

At what age does the epiphysis of the radial head appear?

5th year

20

At what ages does teh epiphysis of the olecranon appear?

After the 10th year