For an AP mortise ankle radiograph, what is the central ray angle?

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Prepare for the Clover Learning Lower Extremities Test. Access multiple choice questions with hints and explanations to enhance understanding. Ace your exam confidently!

Multiple Choice

For an AP mortise ankle radiograph, what is the central ray angle?

Explanation:
The central ray angle is zero degrees, meaning the beam is perpendicular to the imaging receptor. For an AP mortise ankle view, you rotate the foot internally about 15–20 degrees to open the mortise joint between the tibia and fibula, but you don’t angle the X-ray beam. Keeping the central ray perpendicular ensures an undistorted view of the ankle mortise and the talocrural joint spaces. Angling the beam would tilt the projection and could misrepresent joint spacing, which is what the mortise view is specifically designed to assess.

The central ray angle is zero degrees, meaning the beam is perpendicular to the imaging receptor. For an AP mortise ankle view, you rotate the foot internally about 15–20 degrees to open the mortise joint between the tibia and fibula, but you don’t angle the X-ray beam. Keeping the central ray perpendicular ensures an undistorted view of the ankle mortise and the talocrural joint spaces. Angling the beam would tilt the projection and could misrepresent joint spacing, which is what the mortise view is specifically designed to assess.

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