Shoulder/Humerus RAD 1 Positioning

Question 1

What SID is used for humerus and shoulder projections?

Answer 1

40”

Question 2

What IR is used for the humerus?

Answer 2

14 x 17

Question 3

What IR is used for the shoulder?

Answer 3

10 x 12

Question 4

What respiration are the shoulder and humerus views taken?

Answer 4

Suspended respiration

Question 5

Where are shoulder views done?

Answer 5

On the wall bucky

Question 6

Where are humerus views done?

Answer 6

Either wall bucky or table top?

Question 7

Where is the CR located for an AP humerus?

Answer 7

Perpendicular to mid-shaft

Question 8

Where are the epicondyles for an AP humerus?

Answer 8

Parallel to the IR

Question 9

What structures are seen in an AP humerus?

Answer 9

• Epicondyles are seen without rotation
• Humeral head and greater tubercles are seen
• Lesser tubercle is superimposed between greater tubercle and the humeral head

Question 10

Which way can the lateral humerus be done?

Answer 10

either mediolaterally or lateromedially

Question 11

How many degrees does the elbow joint flex for a lateral humerus?

Answer 11

90

Question 12

Where is the CR located for a lateral humerus?

Answer 12

Perpendicular to the midshaft of the humerus

Question 13

Where are the epicondyles located on a lateral humerus

Answer 13

Perpendicular to the IR

Question 14

What structures are seen on a lateral humerus?

Answer 14

• Superimposed epicondyles
• Lesser tubercle seen medially
• Greater tubercle superimposed over humeral head

Question 15

Where is the CR located for an AP Internal shoulder?

Answer 15

1” inferior to the coracoid process

Question 16

Where are the epicondyles located for an AP internal shoulder?

Answer 16

Perpendicular to the IR

Question 17

What structures are seen for an AP internal shoulder?

Answer 17

• Lesser tubercle seen
• Greater tubercle superimposed over humeral head
• Must include superior scapula, lateral half of clavicle, & proximal humerus

Question 18

Where is the CR located for an AP external shoulder?

Answer 18

1” inferior to the coracoid process

Question 19

Where are the humeral epicondyles located for a AP external shoulder?

Answer 19

Parallel to the IR

Question 20

What structures are seen in an AP external shoulder?

Answer 20

• Humeral head seen
• Greater tubercle seen laterally
• Lesser tubercle superimposed over humeral head\
• Includes superior scapula, lateral half of clavicle, & proximal humerus

Question 21

Where is the CR located for the Y view?

Answer 21

The glenohumeral joint

Question 22

What is the “Y” compromised of?

Answer 22

• Acromion
• Coracoid process
• Body of scapula

Question 23

What structures are seen in the Y-view?

Answer 23

• Humeral head and glenoid cavity superimposed
• Acromion projected laterally and no superimposition
• Coracoid superimposed or projected below clavicle
• Used to evaluate for separated shoulder
• Anterior dislocation= Humeral head is beneath coracoid process
• Posterior dislocation= Humeral head is beneath acromion process