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Flashcards in Quiz 2 Deck (50)
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1

How do you measure the Glenohumeral joint space?

1) Measure and average joint space at superior, middle and inferior aspects
2) use the anterior glenoid margin

2

What is the normal range of glenohumeral joint space?

4-5 mm

3

What does a measurement of <4mm signify in glenohumeral joint space?

arthritis

4

What does a measurement of >5mm present in a glenohumeral joint space?

dislocation

5

How do you measure the acromiohumeral space?

Distance from inferior surface of acromion process to superior articular surface of humeral head

6

What is the normal range of the acromiohumeral space?

7-11 mm

7

What measurement typically shows a rotator cuff tear in the acromiohumeral space?

<7mm

8

What does a measurement of >11mm signify in an acromiohumeral joint space?

subluxation, joint effusion, neuropathy

9

What view is required for a glenohumeral joint space?

AP shoulder, externally rotated

10

What view is required for the acromiohumeral joint space?

AP shoulder, externally rotated

11

What view is required for the acromioclavicular space?

AP/PA shoulder/AC joint

12

How do you measure acromioclavicular space?

Measure acromioclavicular joint space

13

What is the average measurement result in the acromioclavicular space?

Average is 3 mm, should not vary more than 2-3 mm bilaterally

14

What does a decreased measurement of acromioclavicular space result in?

arthritis

15

What does an increased measurement of acromioclavicular space represent?

traumatic separation, resorption and subluxation

16

What view is required for the coracoclavicular distance?

AP shoulder

17

How do you measure coracoclavicular distance?

Measure distance from coracoid process to the under surface of the clavicle

18

What is the measurement range of the coracoclavicular distance?

normal is not greater than 12 mm or not more than 5 mm difference from side to side

19

What does an increased coracoclavicular distance present?

AC separation

20

What view is needed for a radiocapitellar line?

Lateral elbow

21

How do you measure the radiocapitellar line?

Line drawn through the center of and parallel to the radius shaft

22

What is a normal finding of the radiocapitellar line?

Should pass through center of capitellum

23

With an abnormal radiocapitellar line what does it represent?

Indication of subluxation (pulled elbow) or dislocation

24

What view is required for the anterior humeral line?

Lateral elbow

25

How do you measure the anterior humeral line?

Line drawn along anterior aspect of humerus on a lateral elbow radiograph shold pass through the middle of the capitellum

26

What will happen to the anterior humeral line in a supracondylar fracture?

With elbow fractures in children, the line will pass anterior to the capitellum

27

How is the carrying angle measured?

Two lines are drawn, one through the midshaft of the humerus, and the other through the midshaft of the ulna

28

What is the normal range of the carrying angle?

normal range is 154-178
Average is 169

29

What view is required for a PA radioulnar angle?

PA wrist

30

How do you measure the PA radioulnar angle?

1) radioulnar line: tangential from tip of radial styloid to base of ulnar
2) Line parallel and through midshaft of radius