For an optimal anteroposterior forearm radiograph, how should the humerus be positioned?

For an optimal anteroposterior forearm radiograph, the positioning of the humerus is crucial to achieve the best image quality. When the humerus is positioned in a way that it is touched or nearly touching the imaging receptor, it helps to minimize the distortion of the forearm and ensures that the anatomy is well visualized without superimposition of surrounding structures.

This approach allows for a more accurate representation of the forearm bones, both the radius and ulna, as they will be depicted in their natural alignment in relation to one another and to the humerus. Proper positioning assists in capturing clear margins and anatomical features, which is vital for appropriate diagnostic evaluation.