The test is performed in a hospital radiology department or in the health care provider's office by an X-ray technician. You will be asked to lie down on the table. The pictures are then taken, with the body repositioned to provide different views.

Inform the health care provider if you are pregnant. Remove all jewelry. You will wear a hospital gown.

There is no discomfort except possibly from positioning the body.

The X-ray is used to detect fractures, tumors, or degenerative conditions of bones in the hips, pelvis, and upper legs.

Abnormal results may include pelvic fractures; tumors of the ilium, ischium, or pubis (the bones of the pelvis); and sacroiliitis (inflammation of the sacroiliac area where the sacrum joins the ilium bone).

Additional conditions under which the test may be performed include ankylosing spondylitis.

There is low radiation exposure. However, pregnant women and children are more sensitive to the risks of X-rays.