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Radiographic Anatomy II > Quiz 2 > Flashcards

Quiz 2 Flashcards

(50 cards)

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1
Q

How do you measure the Glenohumeral joint space?

A

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

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2
Q

What is the normal range of glenohumeral joint space?

A

4-5 mm

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3
Q

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

A

arthritis

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4
Q

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

A

dislocation

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5
Q

How do you measure the acromiohumeral space?

A

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

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6
Q

What is the normal range of the acromiohumeral space?

A

7-11 mm

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7
Q

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

A

<7mm

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8
Q

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

A

subluxation, joint effusion, neuropathy

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9
Q

What view is required for a glenohumeral joint space?

A

AP shoulder, externally rotated

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10
Q

What view is required for the acromiohumeral joint space?

A

AP shoulder, externally rotated

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11
Q

What view is required for the acromioclavicular space?

A

AP/PA shoulder/AC joint

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12
Q

How do you measure acromioclavicular space?

A

Measure acromioclavicular joint space

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13
Q

What is the average measurement result in the acromioclavicular space?

A

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

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14
Q

What does a decreased measurement of acromioclavicular space result in?

A

arthritis

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15
Q

What does an increased measurement of acromioclavicular space represent?

A

traumatic separation, resorption and subluxation

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16
Q

What view is required for the coracoclavicular distance?

A

AP shoulder

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17
Q

How do you measure coracoclavicular distance?

A

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

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18
Q

What is the measurement range of the coracoclavicular distance?

A

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

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19
Q

What does an increased coracoclavicular distance present?

A

AC separation

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20
Q

What view is needed for a radiocapitellar line?

A

Lateral elbow

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21
Q

How do you measure the radiocapitellar line?

Study These Flashcards
A

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

22
Q

What is a normal finding of the radiocapitellar line?

Study These Flashcards
A

Should pass through center of capitellum

23
Q

With an abnormal radiocapitellar line what does it represent?

Study These Flashcards
A

Indication of subluxation (pulled elbow) or dislocation

24
Q

What view is required for the anterior humeral line?

Study These Flashcards
A

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
31
What are the measurements of PA radioulnar angle?
Measure ulnar side proximal angle - normal = 72-95 degrees - abnormal may indicate fracture
32
What view is required for the lateral radius angle?
Lateral wrist
33
How do you measure the lateral radius angle?
1) Line tangential to most distal points (anterior and posterior) on radial articular surface 2) line through and parallel to shaft of radius 3) measure proximal palm side angle
34
What is the normal measurement of lateral radius angle?
Palmar, proximal angle measure: - normal: 79-94 degrees - abnormal may indicate fracture
35
What is the minimal diagnostic series for the wrist?
Posterioranterior view (PA) Medial palmar oblique view Lateral view
36
Minimal diagnostic series of the elbow?
Anteroposterior (AP) view | Lateral view
37
Minimal diagnostic series of the shoulder
Anteroposterior with internal rotation | Anteroposterior with external rotation
38
What are the three carpal arcs?
Proximal Carpal line Mid-Carpal line Distal Carpal Line
39
The proximal carpal line is drawn around which bones?
Scaphoid Lunate Triquetrum
40
Where is the Proximal Carpal line drawn?
Alone the proximal surface of the scaphoid, lunate and triquetrum
41
What bones are surrounded by the mid-carpal line?
Scaphoid Lunate Triquetrum
42
Where is the mid-carpal line drawn?
Line drawn at the mid carpal joint articulation or distal surface of the scaphoid, lunate and triquetrum
43
What bones do the distal carpal line surround?
Capitate | Hammate
44
How is the distal carpal line drawn?
Line drawn on the proximal surface of the capitate and hammate
45
What is view required for the ulnar variance?
PA wrist
46
What is the normal range for the ulnar variance?
distal radius projects 0-3mm beyond the ulna
47
What does an ulnar variance of >3mm signify?
negative ulnar variance
48
What is a positive ulnar variance?
Ulnar is more distal
49
What is the minimal diagnostic series of the hand?
PA Hand Medial palmar oblique Lateral
50
What is the normal finding of the anterior humeral line
Line tangential to anterior humeral cortex should intersect at anterior 1/3 of capitellum

Radiographic Anatomy II (2 decks)

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