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86 Cards in this Set

  • Front
  • Back
The three aspects of the clavicle are the
sternal extremity, body (shaft),and acromial extremity
The three angles of the scapula include the
lateral angle, superior angle, and inferior angle
The anterior surface of the scapula is referred to as the
costal surface
What are the names of the two fossae located on the posterior scapula?
Infraspinous fossa

Supraspinous fossa
All of the joints of the shoulder girdle are classified as being
synovial (diarthrodial)
Joint movement type:

Scapulohumeral
spheroidal
Joint movement type:

Sternoclavicular
Plane
Joint movement type:

Acromioclavicular
Plane
What rotation demonstrates the greater tubercle profiled laterally?
External rotation
What rotation demonstrates the humeral epicondyles angled 45 degrees to image receptor?
Neutral rotation
What rotation demonstrates the epidondyles perpendicular to IR
internal rotation
What rotation demonstrates the supination of the hand
external rotation
What rotation demonstrates the palm of the hand against thigh
neutral rotation
What rotation demonstrates the epicondyles parallel to IR
external rotation
What rotation demonstrates the lesser tubercle profiled medially
internal rotation
What rotation demonstrates the proximal humerus in a lateral position
internal rotation
What rotation demonstrates the proximal humerus in position for an AP projection?
external rotation
How much (at what angle) should the affected arm be abducted from the body for the Inferosuperior Axiolateral projection?
90 degrees
The kV range for adult should projections is
between 70 +/- 5 kV
____ focal spot setting should be selected for most adult shoulder studies.
Small Focal Spot
T/F: Low mA with short exposure times should be used for adult shoulder studies.
False.

High mA
T/F: The use of contact shields over the breast, lung, and thyroid regions is recommended for most shoulder projections.
True
T/F: CT arthrography of the shoulder joint requires the use of iodinated contrast media injected into the joint space.
True
T/F: MRI is an excellent modality for demonstrating nondisplaced fractures of the shoulder girdle.
FALSE
T/F: Nuclear medicine bone scans can demonstrate signs of osteomyelitis and cellulitis.
True
Compression between the greater tuberosity and soft tissues on the coracoacromial ligamentous and osseous arch
Impingement syndrome
Injury of the anteroinferior glenoid labrum
Bankart lesion
Inflammatory condition of the tendon
Tendonitis
Superior displacement of the distal clavicle
Acromioclavicular joint
Compression fracture of the articular surface of the humeral head
Hill-Sachs defect
Traumatic injury to one or more of the supportive muscles of the shoulder girdle
Rotator Cuff Tear
Atrophy of skeletal tissue
Osteoporosis
Subacromial spurs
Impingement syndrome
Fluid-filled joint space
Bursitis
Thin bony cortex
Osteoporosis
Abnormal widening of acromioclavicular joint space
Acromioclavicular joint separation
Calcified tendons
Rheumatoid arthritis
Avulsion fracture of the glenoid rim
Bankart lesion
Narrowing of joint space
Osteoarthritis
Closed joint space
Rheumatoid arthritis
Compression fx of humeral head
Hill-Sachs defect
Which two basic shoulder projections are routinely taken for a shoulder (with no traumatic injury) and proximal humerus?
AP external

AP internal
Specifically, where is the central ray placed for an AP projection of the shoulder?
Perpendicular to IR, to midscapulohumeral joint; 3/4" inferior and lateral to coracoid process
Which lateral projection can be performed to demonstrate the entire humerus for a patient with a midhumeral fx?
Transthoracic lateral
To best demonstrate a possible Hill-Sachs defect, which additional positioning technique can be added to the infero-superior axial projection?
Rotated affected arm externally approximately 45 degrees
What type of central ray angulation is required for the inferosuperior axial projection for the shoulder?
25 - 30 degrees medially
The ___ projection of the shoulder produces an image of the glenoid process in profile. This projection is also referred to as the ___ method.
AP oblique

Grashey method
Which projection produces a tangential projection of the intertubercular groove?
Tangential projection
(Fisk modification)
The supine version of the tangential projection for the intertubercular groove requires that the central ray be angled ___ from the horizontal plane.
10 - 15 degrees posteriorly
What projection would demonstrate a possible dislocation of the proximal humerus?
Scapular Y
The ___ projection is the special projection of the shoulder that best demonstrates the acromiohumeral space for possible subacromial spurs, which create shoulder impingement symptoms.

This projection is also referred to as the ___ method.
Supraspinous outlet tangential projection

Neer method
What projection can be performed erect to provide a lateral view of the proximal humerus in relationship to the glenohumeral joint?
Superoinferior axial projection
(Hobbs modification)
How much is the CR angled for the inferosuperior axial projection (Clements modification) if the patient cannot fully abduct the arm 90 degrees?
5 - 15 degrees toward axilla
What CR angle is required for the AP axial projection (Alexander method) for AC joints?
15 degrees cephalad
T/F: The superoinferior axial projection (Hobbs modification) requires no CR angle.
True
T/F: The transthoracic lateral projection can be performed for possible fractures or dislocations of the proximal humerus.
True
T/F: The affected arm must be placed into external rotation for the transthoracic lateral projection.
FALSE

Neutral rotation
A CR angle of ____ may be used for the transthoracic lateral projections if the patient is unable to elevate the injured arm and shoulder sufficiently.
10-15 degrees cephalad
T/F: The scapular Y lateral (anterior oblique) position requires the body to be rotated 45-60 degrees anteriorly toward the affected side.
True
What shoulder projection delivers the greatest skin dose to the patient?
Transthoracic lateral

Skin dose - 1005
What shoulder projection requires the smallest thyroid dose?
Scapular Y lateral

Skin dose - 1
Which special projection of the shoulder requires that the affected side be rotated 45 degrees toward the cassette and uses a 45 degree caudad central ray angle?
Garth method
(AP apical oblique axial projection)
A posterior dislocation of the humerus projects the humeral head (superior/inferior) to the glenoid cavity with the Garth method.
Superior
A thin-shouldered patient requires ___ CR angle for an AP axial clavicle projection than a large-shouldered patient.
10 - 15 degrees MORE
Inferosuperior axial
Lawrence method
AP oblique for glenoid cavity
Grashey method
Tangential for intertubercular (bicipital) groove
Fisk modification
Supraspinatus outlet tangential
Neer method
Transthoracic lateral
Lawrence method
AP apical oblique axial
Garth method
What medial CR angle is required for the inferosuperior axial shoulder (Lawrence method) projection?
25-30 degrees

inferosuperior axial shoulder (Lawrence method) is laying down - CR into axilla
For a Grashey method projection of the shoulder, the CR is centered
to the scapulohumeral joint.
T/F: AP scapula is performed using a breathing technique.
True
Which projection of the shoulder requires that the patient be rotated 45-60 degrees toward the IR from a PA position?
Lateral scapula position
How much CR angulation is recommended for an asthenic patient for an AP axial projection of the clavicle?
30 degrees
Where is the CR centered for an AC joint projection on a single 14x17" image receptor?
1 inch above the jugular notch
A radiograph of an anterior oblique scapular Y position reveals that the scapula is slightly rotated (vertebral and axillary borders are not superimposed). The axillary border of the scapula is determined to be more lateral compared with the vertebral border. What modification should be made for the repeat exposure?
Increase rotation of thorax

(PA projection)
Situation: A pt comes for tx of an arthritic condition o fthe right shoulder. The radiologist orders AP internal/external rotation projections as well as an inferosuperior axiolateral projection o fthe scapulohumeral joint. However, pt can't abduct the arm for this projection. What other projection will best demonstrate the scapulohumeral joint space?
AP oblique
Situation: A pt enters the ED w a possible AC joint separation. The pt is paraplegic; therefore, the study can't be done erect. What routine would be performed to diagnose this condition?
Non-weight-bearing and weight-bearing-type projections performed with the patient recumbent by pulling down on the shoulders.
Situation: A pt enters the ED w a possible bony defect or fx of the midwing area of scapula. Pt can stand. In addition to the routine AP scapula projection with arm abducted, what would best demonstrate the involved area?
Have pt reach across the chest and grasp opposite shoulder for a lateral scapula projection.
T/F: A posterior dislocation of the shoulder occurs more frequently than an anterior dislocation.
FALSE.

Anterior dislocation occurs more frequently.
What position demonstrates the greater tubercle in profile medially?
None of the above
Supraspinatus outlet projection
Neer method
Inferosuperior axial (patient supine) projection
Lawrence method
Posterior oblique, glenoid cavity projection
Grashey method
Where is the central ray directed for the Scapular Y lateral projection?
Mid-scapula