A lateral wrist projection obtained with the elbow flexed 90 degrees and the humerus placed parallel with the IR demonstrates
1)the ulnar styloid distal to the midline of the ulnar head.
2)superimposition of the radius and ulna.
3)superimposition of the distal scaphoid and pisiform.
4)the ulnar styloid in profile.
A) 1 and 2 only
B) 3 and 4 only
C) 1, 2, and 3 only
D) 2, 3, and 4 only

Question

Quizplus · Accepted Answer

In a correctly positioned lateral wrist projection with the elbow flexed 90 degrees and the humerus parallel to the image receptor (IR), the radius and ulna should be superimposed (2), the distal scaphoid and pisiform should also be superimposed (3), and the ulnar styloid should be in profile (4). This positioning ensures an accurate lateral view of the wrist, which is essential for diagnosing fractures, dislocations, and other pathologies.

A Lateral Wrist Projection Obtained with the Elbow Flexed 90