A poorly positioned PA oblique wrist projection demonstrates superimposition of the trapezoid and trapezium, and the capitate is superimposed by the trapezoid. How should the positioning setup be adjusted to obtain an optimal projection?
A) Align the third metacarpal and midforearm, decreasing radial flexion.
B) Increase the degree of medial wrist rotation.
C) Decrease the degree of medial wrist rotation.
D) Increase hand extension.

Question

Quizplus · Accepted Answer

To correct the superimposition seen in a poorly positioned PA oblique wrist projection, decreasing the degree of medial wrist rotation will help in achieving better separation of the trapezoid and trapezium, and prevent the capitate from being superimposed by the trapezoid. This adjustment aligns the bones more accurately for optimal imaging.

A Poorly Positioned PA Oblique Wrist Projection Demonstrates Superimposition of the Trapezoid