Question

The AP projection of the elbow demonstrates which of the following bony structures?

1) Coronoid process
2) Radial head
3) Styloid process of the radius
4) Coracoid process

Answer 1

In an AP projection of the elbow, the structures typically demonstrated include the coronoid process and the radial head, but not the coracoid process or the styloid process of the radius.

Step-by-step explanation:

The AP (anteroposterior) projection of the elbow typically demonstrates several bony structures of the forearm and elbow, including the coronoid process and the radial head. The coronoid process is a prominent lip of bone located at the inferior margin of the trochlear notch of the ulna and it is visible in this projection. The radial head is a disc-shaped structure located at the proximal end of the radius and articulates with the capitulum of the humerus as part of the elbow joint. However, the AP projection of the elbow does not typically demonstrate the styloid process of the radius as clearly because it is more distal and the coracoid process, which is part of the scapula and not directly involved in the elbow joint.