Portions of the patient’s anatomy are excluded from the field of view.

There are external structures overlying the patient’s pelvis, such as a backboard.

The image is rotated.

There are compression fractures.

There are transverse process fractures.

There is lumbar spine degeneration.

There are displaced fractures or disrupted/asymmetric foraminal arcs.

The sacroiliac joints are widened and asymmetric.

There is malalignment at the inferior margin of the sacroiliac joints.

There are radiographic findings of sacroiliac inflammation or degeneration.

The pubic symphysis is widened or vertically incongruent.

There are radiographic findings of pubic symphysis inflammation or degeneration.

There is a pubic ramus fracture.

There are avulsion fractures at the ischial tuberosities.

Iliac wing fractures are present.

Posterior iliac bone fractures are present.

Iliac crest avulsion fractures are present.

Anterior superior iliac spine avulsion fractures are present.

Anterior inferior iliac spine avulsion fractures are present.

Ischial spine avulsion fractures are present.

Triradiate cartilages (if open) are asymmetric or disrupted.

Ilioischial lines are disrupted.

Iliopubic (iliopectineal) lines are disrupted.

Anterior walls of the acetabula (if ossified) are disrupted.

Posterior walls of the acetabula (if ossified) are disrupted.

Anterior walls of the acetabula (if ossified) are lateral to the posterior walls (“crossover sign”).

Acetabular roofs are discontinuous.

Acetabular angles are abnormal.

There is hip dislocation or subluxation.

The teardrop distance is asymmetric.

There is bulging of the fat planes about the hips.

There are radiographic findings of hip osteoarthritis or inflammation.

The cortices of the femoral heads are irregular or indistinct.

There is abnormal osseous density of the femoral epiphyseal ossification centers.

Femoral epiphyseal ossification centers are asymmetric in size.

The proximal femoral physes are widened or abnormally smooth or irregular in contour.

Klein lines asymmetrically cross the femoral epiphyses or there is displacement of the femoral epiphyses with respect to the femoral necks.

The center edge angle of the femoral heads is abnormal.

There is osseous prominence at the lateral femoral head/neck junctions.

There are fractures of the femoral neck, intertrochanteric region, or subtrochanteric region.

The trabecular pattern of the proximal femurs is abnormal.

There are avulsion fractures of the greater or lesser trochanters.

The osseous mineralization is diffusely abnormal.

Additional osseous lesions are identified.

There are radio-opaque foreign bodies, lacerations, or soft tissue swelling.

There are other incidental soft tissue abnormalities.