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EXERCISE 2: WHAT STRUCTURE IS THIS?

Exercise 2 Objective: Teach the user to recognize radiographic anatomy on the normal radiographs of the routine evaluation of the cervical spine elbow.

Exercise type: 2: What Structure is This?

Instruction: User will look at the highlighted structure and identify it from a list of five possibilities.

View: Anteroposterior Elbow

What structure is this?

A. humeroradial joint

B. humeroulnar joint

C. proximal radioulnar joint

D. capitulum

E. trochlea

Question Rationale: A depression called the radial notch is located on the lateral aspect of the coronoid process of the proximal ulna; the radial head articulates with it forming the proximal radioulnar joint.

What structure is this?

A. humeroradial joint

B. humeroulnar joint

C. proximal radioulnar joint

D. capitulum

E. trochlea

Question Rationale: The trochlea is on the medial side of the distal humerus and articulates with the ulna, forming the humeroulnar joint.

What structure is this?

A. humeroradial joint

B. humeroulnar joint

C. proximal radioulnar joint

D. capitulum

E. trochlea

Question Rationale: The rounded capitulum is on the lateral aspect of the humerus and articulates with the radial head, forming the humeroradial joint.

What structure is this?

A. humeroradial joint

B. humeroulnar joint

C. proximal radioulnar joint

D. capitulum

E. trochlea

Question Rationale: The capitulum is on the lateral aspect of the distal humerus and has a rounded shape.

What structure is ...

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