To reduce foreshortening of the femoral neck on an AP hip image, which action is recommended?

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Multiple Choice

To reduce foreshortening of the femoral neck on an AP hip image, which action is recommended?

Explanation:
Internally rotate the leg. Turning the leg inward brings the femoral neck into alignment with the plane of the image receptor, so it appears in true length rather than shortened on an AP hip view. The usual goal is about 15–20 degrees of internal rotation, which places the neck parallel to the IR and reduces foreshortening. External rotation would make the neck appear shorter, and changing tube angulation doesn’t reliably correct neck foreshortening.

Internally rotate the leg. Turning the leg inward brings the femoral neck into alignment with the plane of the image receptor, so it appears in true length rather than shortened on an AP hip view. The usual goal is about 15–20 degrees of internal rotation, which places the neck parallel to the IR and reduces foreshortening. External rotation would make the neck appear shorter, and changing tube angulation doesn’t reliably correct neck foreshortening.

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