Shoulder Girdle Anatomy & Positioning Flashcards

1
Q

what bones make up the shoulder girdle?

A

clavicle and scapula

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2
Q

what does the shoulder girdle articulate with?

A

head of humerus, manubrium of sternum, each other (AC joint)

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3
Q

t/f the humerus is considered part of the shoulder girdle

A

false

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4
Q

what is the classification of the shoulder joint by function?

A

diarthrodial

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5
Q

what is the classification of the shoulder joint by anatomy (structure)?

A

synovial

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6
Q

what type of joint is the shoulder girdle

A

ball and socket

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7
Q

what type of bone is the clavicle

A

long bone

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8
Q

the lateral end of the clavicle articulates with the

A

acromion on scapula (AC joint)

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9
Q

the medial end of the clavicle articulates with the

A

manubrum of the sternum (SC joint)

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10
Q

is the curve of the clavicle more pronounced in male or female patients?

A

male patients

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11
Q

what type of bone is the scapula

A

flat bone

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12
Q

what is the lateral, thickened end of the scapular spine called?

A

acromion

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13
Q

which border is the scapular notch located on?

A

superior border

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14
Q

what is the required patient position to demonstrate the left shoulder in a PA oblique scapular Y?

A

45 - 60 degrees LAO

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15
Q

how is the arm positioned for the inferosuperior axial projection (Lawrence method)?

A

affected arm abducted to a right angle in external rotation

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16
Q

collimation of single AC joint

A

6 x 8 inches

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17
Q

collimation of bilateral AC joint

A

6 x 17 inches

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18
Q

collimation of all clavicle projections

A

8 x 12

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19
Q

light field of clavicle projections

A

1.5 in above shoulder, 1 in beyond lateral aspect of the shoulder

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20
Q

angle for upright AP axial clavicle

A

15 - 30 degrees cephalic

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21
Q

angle for standing and Lordotic AP axial clavicle

A

0 - 15 degrees cephalic

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22
Q

angle for supine AP axial clavicle

A

15 - 30 cephalic

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23
Q

do thinner or thicker patients get more angle for AP axial clavicle

A

thinner patients

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24
Q

angle for PA axial clavicle

A

15 - 30 degrees caudal

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25
Q

three borders of the scapula

A

lateral, medial, superior

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26
Q

two surfaces of the scapula

A

costal (anterior), dorsal (posterior)

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27
Q

three angles of the scapula

A

superior, inferior, lateral

28
Q

what is the angle for Alexander method AC joints

A

15 degrees cephalic

29
Q

breathing instructions for AP clavicle

A

exposure made at end of exhalation

30
Q

CR placement for bilateral SC joints

A

mid manubrium of sternum

31
Q

which bone forms the posterior portion of the shoulder girdle

A

scapula

32
Q

which position will show the shoulder in a true AP

A

Grashey method

33
Q

why is upright position required on AP AC joints?

A

supine position will reduce dislocation, if present

34
Q

why are two images crucial for showing AC joints?

A

one with weights and one without weights to show degree of separation of joint space

35
Q

CR for AP scapula

A

perpendicular to point 2 inches inferior to coracoid process

36
Q

collimation for AP scapula

A

10 x 12

37
Q

light field for AP scapula

A

1.5 in above shoulder, 2 in beyond lateral aspect of the shoulder, lateral half of the clavicle, 1 in below the inferior angle of the scapula

38
Q

breathing instructions for AP scapula

A

exposure made during slow breathing to eliminate lung detail and clearly show scapula

39
Q

what is the most lateral joint in the shoulder girdle?

A

AC joint

40
Q

arm position for lateral scapula

A

flex elbow, place back of hand on posterior thorax, ensure humerus does not overlap scapula

41
Q

which borders of the scapula are perpendicular to the IR in a lateral view?

A

lateral and medial borders

42
Q

How is the affected upper limb positioned to demonstrate the acromion and coracoid on the lateral projection of the scapula?

A

Elbow flexed with the back of the hand resting on the posterior thorax

43
Q

how should the arm be positioned to demonstrate the body of the scapula?

A

arm extended upward and rest forearm on head

44
Q

CR placement for lateral scapula

A

perpendicular to midmedial border of scapula

45
Q

collimation of lateral scapula

A

12 in length, 1.5 in above shoulder, 1 in beyond lateral shadow

46
Q

evidence of proper positioning AP/PA clavicle

A

lateral half of clavicle above the scapula, medial half superimposed on the thorax

47
Q

evidence of proper positioning AP/PA axial clavicle

A

lateral two-thirds projected above ribs and scapula, medial end superimposed on thorax, clavicle in horizontal orientation

48
Q

which joints need to be seen on a clavicle image

A

AC and SC joints

49
Q

Upright bilateral AC joint SID

A

72

50
Q

the lateral aspect of the clavicle is termed

A

acromial extremity

51
Q

the medial aspect of the clavicle is termed

A

sternal extremity

52
Q

which is more anterior, the acromion or the coracoid process?

A

coracoid process

53
Q

what is the thickest part of the body of the scapula?

A

the lateral angle

54
Q

SID for AC joints

A

72 inches

55
Q

section of the clavicle projected above the ribs and scapula for AP axial clavicle

A

lateral two thirds projected above, with medial end superimposing the thorax

56
Q

breathing instructions for AP clavicle

A

suspended at end of expiration

57
Q

breathing instructions for AP axial clavicle

A

suspended at end of expiration

58
Q

breathing instructions for AP scapula

A

slow breathing to eliminate lung detail

59
Q

light field of AP scapula

A

10 x 12, 1.5 in above shoulder, 2 in beyond lateral aspect of the shoulder and clavicle, 1 in below inferior angle of scapula

60
Q

arm position for AP scapula

A

raised at a right angle

61
Q

CR for AP scapula

A

perpendicular to midscapular area, 2 inches inferior to the coracoid process

62
Q

patient position for lateral scapula to show acromion and coracoid processes

A

45-60 degrees RAO or LAO, arm behind back

63
Q

patient position for lateral scapula to show body of the scapula

A

45-60 degrees RAO or LAO, arm extended upward and forearm resting on head

64
Q

breathing instructions for lateral scapula

A

suspend respiration

65
Q

CR placement for lateral scapula

A

perpendicular to the midmedial border of protruding scapula, medial and lateral borders superimposed