A PA axial, ulnar-deviated wrist projection with poor positioning demonstrates a closed scaphocapitate joint and an open hamate-capitate joint. How should the positioning setup be adjusted for an optimal image to be obtained?
A) Increase the degree of external wrist rotation.
B) Decrease the degree of external wrist rotation.
C) Extend the fingers, with the hand flat.
D) Adjust the degree of central ray angulation.

Question

Quizplus · Accepted Answer

In an ulnar-deviated wrist projection, decreasing the degree of external rotation will help to open the scaphocapitate joint and close the hamate-capitate joint, resulting in a better image. Extending the fingers and adjusting the central ray angulation may also be helpful, but decreasing external rotation is the best choice for this specific scenario.

A PA Axial, Ulnar-Deviated Wrist Projection with Poor Positioning Demonstrates