Shoulder Girdle Flashcards
For an AP internal rotation projection of the shoulder, what bony landmark will be shown in profile?
lesser tubercle
A wedge-shaped compression fracture of the anterior surface of the humeral head, called the Hills-Sachs defect, is best shown in which of the following projections?
Rafert Modification
Radiographs of the acromio-clavicular articulations must be performed:
a) bilaterally
b) weight-bearing and non weight-bearing
c) erect
all of the above
In evaluating a radiograph of a true lateral scapula, the two structures that should be exactly superimposed are:
vertebral and axillary borders
The patient is placed supine with the arm abducted to a right angle with the body. The elbow is flexed. This describes the ______ projection of the scapula.
AP
What forms the superior aspect of the Y on the lateral projection of the scapula?
acromion and coracoid processes
What is demonstrated in profile on the AP projection of the shoulder in external rotation?
greater tubercle
When radiographing the shoulder in the inferosuperior axial projection (Lawrence Method), how should the humerus be positioned?
abducted 90 degrees, externally rotated
When radiographing the acromion and coracoid processes in a lateral projection of the scapula, where should the patient’s affected arm be positioned?
a) extended above the head with forearm resting on head
b) hanging on the side in a neutral position
c) resting in the patients lap
none of the above
How should the patient be positioned when performing the radiograph for possible AC joint separation?
upright
What should the CR be angled if the patient cannot elevate the unaffected shoulder for a transthoracic lateral projection of the shoulder?
10-15 degrees
Which anatomic part is radiographed to evaluate soft-tissue damage evidenced by increased joint separation when weights are applied to the patient’s wrists?
AC joints
How should the CR be angled for the AP projection (Pearson method) of the A-C joints?
0 degrees
Which projections can be used to demonstrate the clavicle?
1) AP or PA
2) AP Axial
3) PA Axial
1, 2, and 3
When the patient is positioned properly for a lateral projection of the scapula, the body of the scapula will be _______.
perpendicular to the plane of the IR
Which criteria are required for visualization of the greater tubercle in profile?
1) epicondyles parallel to the film
2) arm in external rotation
3) humerus in AP position
1, 2, and 3
What is the correct tube angle and direction for an axial projection of the clavicle with the patient in the AP supine position?
15-30 degrees cephalad
In an anterior dislocation of the humerus, when looking at the scapular Y projection,, the head of the humerus will be beneath the _______.
coracoid process
In the lateral projection of the scapula, which statements are true?
1) Vertebral and axillary borders are superimposed.
2) acromion and coracoid processes are superimposed
3) Patient may be examined in the erect position
1 and 3 only
Which projection best demonstrates acromioclavicular separation?
1) AP recumbent, affected shoulder
2) AP recumbent, both shoulders
3) AP Erect, affected shoulder
4) AP Erect, both shoulders
AP erect, both shoulders
Where is the CR directed for an AP shoulder?
Perpendicular to a point 1 inch inferior to the coracoid process
For the AP projection of the scapula, which statements are true?
1) Patient’s arm is abducted at right angles to the body
2) Patient’s elbow is flexed with the hand supinated
3) Exposure is made during quiet breathing
1, 2, and 3
Where is the central ray directed for an AP projection of the scapula?
2 inches inferior to the coracoid process
In a posterior dislocation of the humerus, where will the head of the humerus be located in a scapular Y projection?
Beneath the acromion process
In an AP axial clavicle projection with the patient in the lordotic position, how is the CR angled?
0-15 degrees cephalad
What is the respiration instruction for an AP projection of the shoulder?
Suspended
What is the respiration instruction for an AP projection of the clavicle?
Expiration
What is the respiration instruction for an AP axial projection of the clavicle?
Inspiration
