How is the patient positioned for an AP projection (modified Cleaves method) of the pelvis to demonstrate the femoral neck without foreshortening?
A) Abduct the femurs to a 45-degree angle with the IR.
B) Abduct the femurs until they are placed as close to the imaging table as possible.
C) Abduct the femurs to 20 to 30 degrees from vertical.
D) This cannot be accomplished in this projection.

Question

Quizplus · Accepted Answer

To demonstrate the femoral neck without foreshortening, the femurs should be abducted to 20 to 30 degrees from vertical to align the femoral necks parallel to the image receptor. This is achieved in the modified Cleaves method by bending the legs at the knees and placing the feet and medial malleoli flat on the imaging table. The legs are then separated and the femurs are rotated laterally by 20 to 30 degrees. The pelvis is centered to the image receptor, with the pubic symphysis and ASIS equidistant from the table.

How Is the Patient Positioned for an AP Projection (Modified