Shoulder Anatomy on Xray

Which radiographic projection of the shoulder shows the greater tubercle in full profile on the lateral aspect of the proximal humerus?

• AP external rotation

• PA oblique scapular Y

• AP internal rotation

• AP neutral rotation

What anatomical feature is visualized in full profile on the medial aspect of the humeral head during internal rotation?

• Clavicle

• Lesser tubercle

• Greater tubercle

• Scapulohumeral joint

In neutral rotation, what happens to the greater tubercle in relation to the humeral head?

• It is visualized in full profile on the medial aspect.

• It is visualized in full profile on the lateral aspect.

• It partially superimposes the humeral head.

• It is fully superimposed over the humeral head.

What is the primary purpose of the PA oblique scapular Y projection?

• To evaluate fractures of the clavicle

• To visualize the greater tubercle in full profile

• To identify the anatomical neck of the humerus

• To assess dislocation of the humeral head

Which anatomical structure is superimposed over the body of the scapula in the PA oblique scapular Y projection?

• Coracoid process

• AC joint

• Shaft of the humerus

• Clavicle