Which of the following describes the position for lateral ankle radiography?

The position for lateral ankle radiography requires the affected ankle to be placed directly on the surface of the cassette. This positioning ensures that the true lateral view of the ankle joint is captured, which is critical for accurately assessing the structure of the bones and any potential injuries or conditions present.

Aligning the affected ankle on the cassette provides a flat, stable surface that minimizes distortion and allows for optimal imaging of the lateral aspects of the ankle, including the fibula, tibia, and surrounding soft tissues. This positioning is essential for producing clear and diagnostic-quality images.

In contrast, the other choices represent incorrect positioning techniques that could lead to suboptimal images. An unstable position with the ankle bent might create a foreshortened or distorted view, while a neutral position with no support could lead to movement during exposure, resulting in blurring. Rotating the foot inward 45 degrees would not provide a true lateral view and may obscure important anatomical details necessary for interpretation.