Definition of Lumbosacral spine x-ray:

A lumbosacral spine x-ray is a picture of the small bones (vertebrae) in the lower part of the spine, which includes the lumbar region and the sacrum, the area that connects the spine to the pelvis.

How the test is performed:

The test is done in a hospital x-ray department or your health care provider's office by an x-ray technician. You will be asked to lie on the x-ray table in different positions. If the x-ray is being done to diagnose an injury, care will be taken to prevent further injury.

The x-ray machine will be placed over the lower part of your spine. You will be asked to hold your breath as the picture is taken so that the image will not be blurry. Usually three to five pictures are taken.

How to prepare for the test:

Inform the health care provider if you are pregnant. Remove all jewelry.

How the test will feel:

There is rarely any discomfort when having an x-ray, although the table may be cold.

Why the test is performed:

Often, a health care provider will treat a person with low back pain for 4 to 8 weeks before ordering an x-ray.

The most common reason for lumbosacral spine x-ray is to look for the cause of low back pain that:

• Occurs after injury
• Is severe
• Does not go away after 4 to 8 weeks
• Is present in an older person