Elbow, Humerus, Shoulder

Question 1

AP Elbow Evaluation Criteria

Answer 1

• Radial head, neck, and tuberosity slightly superimposed over the proximal ulna
• Elbow joint in centered to the exposure field
• Open humeroradial joint
• No rotation of humeral epicondyles
• Bony trabecular detail and surrounding soft tissue

Question 2

Lateral Elbow Elevation Criteria

Answer 2

• Elbow joint centered to the exposure field

Elbow in true lateral position:
- Superimposed humeral epicondyles
- Radial tuberosity facing anteriorly
- Radial head partially superimposing the coronoid process
- Olecranon process in profile

• Elbow flexed 90 degrees

Question 3

AP Oblique Elbow, with medial rotation

Answer 3

• Elbow joint centered to the exposure field
  45 degree medial rotation of elbow:
• Coronoid process in profile
• Elongated medial humeral epicondyle
• Ulna superimposed by the radial head and neck
• Trochlea
• Olecranon process within the Olecranon fossa

Question 4

AP Oblique Elbow, with lateral rotation

Answer 4

• Elbow joint centered to the exposure field

45 degree lateral rotation of elbow;
- radial head, neck, and tuberosity projected free of the ulna

Question 5

AP Humerus

Answer 5

• Elbow and shoulder joints visible but slightly distorted due to beam divergence
• Humeral epicondyles without rotation ( Medial and Lateral )
• Humeral head and greater tubercle, located between the Humeral head and the great tubercle
• Outline of the lesser tubercle, located between the humeral head and greater tubercle

Question 6

Lateral Humerus

Answer 6

• Elbow and shoulder joint visible but slightly distorted due to beam divergence
• Superimposed humeral epicondyles
• Lesser tubercle in profile on medial aspect
• Greater tubercle superimposed over the humeral head

Question 7

AP Shoulder

Answer 7

Center Point: 1 inch inferior to the coracoid process
Collimation- Be sure the include sternal end of clavicle