Sacroiliac Joint Injection

What is the sacroiliac joint?

It is the area between your sacrum or tail bone and your ilium or hipbone.

What is sacroiliac joint pain?

Inflammation in the sacroiliac joint can cause pain in the low back and/or buttock that often radiates into the leg. This is especially common in women of all ages.

What is a sacroiliac joint injection?

This is when your physician injects steroid medication and some numbing medication into the joint space to alleviate the pain and dysfunction associated with inflammation.

How does the physician perform a SI injection?

The physician will determine what side you will need the injection on from your pain symptoms and an examination. You will lie on your abdomen. You may be asked to lie on a special pillow about the level of your belly button. The skin on your upper buttock will be cleansed with an antiseptic solution. The physician will numb your skin and deeper tissue with a local anesthetic. You may feel pressure, which may be slightly uncomfortable as the physician places the needle into the SI joint, injects the medication, and removes the needle. An assistant will clean and place a dressing on the injection site.

Your physician may want to use fluoroscopy (x-ray) when doing this procedure to identify the appropriate areas. If fluoroscopy (x-ray) is used, you will be taken to the procedure room. If there is a possibility that you could by pregnant, be sure to inform the staff.

When can I eat and drink?

After the procedure is finished, you will be given something to drink. Crackers are available upon request. After you leave the Pain Medicine Clinic you may eat whatever you desire.

How long will I have to stay?

After the procedure is over, you will be requested to lie down for about 15 minutes before getting up. You may be asked to stay an additional 10 minutes for observation.

What are the potential complications or risks?

The risks are minimal, but please read about the risks on the informed consent and authorization form anesthesia sheet. Other risks include bleeding, infection and temporary nerve block. The physician will go over these with you before the procedure.

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