Why must the lower limb be rotated 15° to 20° internally for AP pelvis projection (nontrauma)?
A)To separate the greater trochanter from the lesser trochanter
B)To place the fovea capitis into a profiled position
C)To open up the femoroacetabular joint
D)To place the femoral neck parallel to the image receptor

Question

Quizplus · Accepted Answer

Rotating the lower limb internally 15° to 20° places the femoral neck parallel to the image receptor, providing a more accurate and detailed view of the femoroacetabular joint. This positioning ensures that the femoral head and neck are not foreshortened and that they are displayed without superimposition.

Why Must the Lower Limb Be Rotated 15° to 20°