What maneuver is performed to align the femoral neck parallel to the IR for the AP projection of the hip?

What maneuver is performed to align the femoral neck parallel to the IR for the AP projection of the hip?

• A. Legs are externally rotated 15 to 20°
• B. Legs are abducted 15 to 20°
• C. Legs are internally rotated 15 to 20°
• D. Legs are flexed at the knees

Answer: (C)

The maneuver to align the femoral neck parallel to the image receptor (IR) for the anteroposterior (AP) projection of the hip involves internally rotating the legs by 15 to 20 degrees. This internal rotation is essential as it helps in positioning the femoral neck in a true AP projection, allowing for proper visualization of structures such as the acetabulum and the femoral head. When the legs are internally rotated, the femoral neck, which is typically angled anteriorly, becomes more parallel to the IR. This positioning minimizes distortion and enhances the clarity of the hip joint in radiographic images, providing more accurate diagnostic information. In contrast, external rotation, abduction, or flexion at the knees does not achieve the desired alignment for the AP projection of the hip and may lead to misinterpretation of the hip joint's anatomy in radiographs. Internal rotation is therefore the recognized and standardized technique to ensure accuracy in imaging the hip joint.

The maneuver to align the femoral neck parallel to the image receptor (IR) for the anteroposterior (AP) projection of the hip involves internally rotating the legs by 15 to 20 degrees. This internal rotation is essential as it helps in positioning the femoral neck in a true AP projection, allowing for proper visualization of structures such as the acetabulum and the femoral head.

When the legs are internally rotated, the femoral neck, which is typically angled anteriorly, becomes more parallel to the IR. This positioning minimizes distortion and enhances the clarity of the hip joint in radiographic images, providing more accurate diagnostic information.

In contrast, external rotation, abduction, or flexion at the knees does not achieve the desired alignment for the AP projection of the hip and may lead to misinterpretation of the hip joint's anatomy in radiographs. Internal rotation is therefore the recognized and standardized technique to ensure accuracy in imaging the hip joint.