Less abduction of femora of only 20° to 30° from vertical provides for the least foreshortening of femoral necks when performing the AP bilateral "frog-leg" projection.

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Quizplus · Accepted Answer

This statement is true. When the femora are abducted at a lesser angle (20° to 30° from vertical) during the AP bilateral "frog-leg" projection, it leads to less foreshortening of the femoral necks. This allows for better visualization of the femoral necks and reduces the chances of misinterpretation or missed diagnosis.

Less Abduction of Femora of Only 20° to 30° from Vertical