What are SIJ Injections? How do they work?

These treatments aim to soothe nerve endings within the sacroiliac joint, which can be overlooked as a source of lower back pain. With the help of real time x-ray equipment your doctor can inject a mixture of anesthetic and pain medication to reduce the inflammation that may be causing pain.

Benefits from an SIJ Injection

An SIJ injection functions as a treatment for a patient’s pain as well as diagnostic test for isolating the source of the pain. If a patient reports a reduced level of discomfort then their physician will repeat the injection to confirm this joint is causing pain. If a patient’s pain returns a short time after injections then their doctor may recommend a different approach to pain relief.

When will I see results?

Depending on the mixture of medication chosen by a physician for a patient’s specific needs, most patients report immediate although temporary relief. It will take a couple of days for the injected medication to decrease pain within the joint for a longer duration.


BEFORE injections:
Stop taking aspirin or other anti-inflammatory drugs 5 days before
Stop taking blood-thinning medications 2 days prior
Do not take any pain medications 8 hours prior
Do not eat or drink for 6 hours before injection
Arrange for transportation home after the procedure

A patient during this procedure will remain awake but made comfortable with mild sedatives through a placed IV line. A nurse will accompany your physician to monitor vitals signs. The injection site will be cleaned and local anesthetic is given to maximize a patient’s comfort. Then, using an x-ray machine that creates real time video, your doctor will place the medication within the joint. They may ask for a patient’s feedback while administering the injection. After a small waiting period you will be allowed to leave the hospital.

Risk Factors

There is a risk of complication with any medical procedure. Take time to discuss treatment options and any questions you may have with your physician, before agreeing with a procedure.