An AP shoulder projection obtained with the humeral epicondyles positioned parallel with the IR demonstrates the
1)greater tubercle in profile laterally.
2)lesser tubercle in profile medially.
3)humeral head in profile medially.
4)greater tubercle superimposed over the humeral head.
A) 1 and 3 only
B) 1 and 2 only
C) 3 and 4 only
D) 2 and 4 only

Question

Quizplus · Accepted Answer

When the humeral epicondyles are positioned parallel with the image receptor (IR) in an AP shoulder projection, the greater tubercle is shown in profile laterally, and the humeral head is also profiled, but it appears more medially, not superimposed by the greater tubercle.

An AP Shoulder Projection Obtained with the Humeral Epicondyles Positioned