Acromioclavicular Joint And Clavicles

Question 1

Basic projections of the scapula

Answer 1

1. Ap

Question 2

Equipment required

Answer 2

• 24 x 30cm IR crosswise

Question 3

Patient positioning of AP acromioclavicular joint

Answer 3

• patient standing facing the x-ray tube
  *. Rest both shoulders against the IR held side by side in the erect bulky assembly
• Give a patient sand bags of equal wait to carry them in each hand.
• Center the midline of IR to central ray
• The top of IR should be 5 cm above the shoulders

Question 4

Centering point of AP acromioclavicular joint

Answer 4

Midpoint between the acromioclavicular joint, 2.5 cm above the jugular notch

Question 5

Evaluation criteria for acromioclavicular joint

Answer 5

• clavicles, acromioclavicular joint, and sternoclavicular joint are demonstrated.
• Both acromioclavicular joints are in same horizontal plane
• Bony margins and trabeculae markings appear sharp showing no motion

Question 6

Indications for clavicle

Answer 6

1. Pathology
2. Fractures

Question 7

Basic projections of clavicle

Answer 7

1. AP or pa
2. Infero-superior

Question 8

AP of clavicle equipment required

Answer 8

• 24 x 30 cm IR
• Erect bulky

Question 9

Patient positioning of AP clavicle

Answer 9

• patient erect facing the x-ray tube
• Posterior is in direct contact with the IR

Question 10

Centering point of AP clavicle and direction of central ray

Answer 10

• Midpoint of the clavicle
• Vertical or horizontal ray of 90 degrees to the IR

Question 11

Pa of clavicle

Answer 11

Patient faces the IR with he head raised and the chest in contact with the IR

The midpoint of the clavicle should be at the center of the IR

Question 12

PA of clavicle centering point and direction of central ray

Answer 12

• ray directed at the superior Angle scapula.
• Horizontal beam 90 degrees to the IR

Question 13

Evaluation criteria for PA and AP clavicle

Answer 13

• acromioclavicular joints and sternoclavicular joint should be seen
• Mid-clavicle is superimposed on the superior scapula angle.
• Mid-clavicle, acromial and sternal extremities demonstrated clearly
• Sharp bony trabeculae markings and soft tissue details

Question 14

Infero-superior of clavicle equipment required

Answer 14

24 x 30 cm IR
Large form pad

Question 15

Infero-superior patient lying supine clavicle patient positioning

Answer 15

• patient supine facing the x-ray tube, and is slightly rotated to bring the clavicle parallel to IR
• The sound shoulder is turned towards the affected side, that is to bring the scapula in direct contact with the IR
• IR is placed transversely with it’s upper top edge 7.5 cm above the top of the shoulder
• The head is turned away from the injured side

Question 16

Infero-superior patient erect clavicle

Answer 16

• patient stands facing the x-ray tube with the back resting against the IR
• The unaffected shoulder is raised slightly to bring the scapula in contact with the IR
• Patients head is turned away from the affected side
• IR is placed transversely 7.5 cm above the shoulders

Question 17

Infero-superior centering point

Answer 17

Mid- shaft of the clavicle

Cr angled at 30 degrees cephalad

Question 18

Evaluation criteria for axial projection of clavicle

Answer 18

• Entire clavicle, and acromioclavicular joint and sternoclavicular joint are demonstrated
• Bony margins and trabeculae markings appear sharp showing no motion
• Only the medial portion of the clavicle is superimposed by the first and second ribs