Pelvis X-Ray AP

Hip joints and pelvic structures.

Patient supine.
Lower limbs internally rotated 15–20° (feet together, toes pointing inward) to bring the femoral neck parallel to the detector.
Central ray: perpendicular to the IR.
Correct alignment.

Pubic symphysis

Complete visualisation of the pelvis.
Hip joints visible.
No rotation.
Obturator foramina symmetrical bilaterally (confirms absence of pelvic rotation).
Lesser trochanter not visible or barely visible laterally (confirms correct 15° internal rotation).
Sacrum centred relative to the pubic symphysis.

Check for metallic objects.
Routine gonadal shielding is no longer recommended (AAPM 2021); apply dose optimisation according to the local protocol.
Verify compliance with national DRL for this projection.