Skip to Content

Sacroiliac Joint Injection


A sacroiliac (SI) joint injection is done to diagnose or treat pain from sacroiliac joint syndrome. The pain caused by this syndrome may be felt in your lower back, buttocks, groin, and your thigh.


Seek care immediately if:

  • You have a fever.
  • You have increased redness, or swelling around the injection site.
  • You have drainage from the injection site.
  • You are not able to walk or move your leg.

Contact your healthcare provider if:

  • Your pain does not get better within 5 days.
  • You have new symptoms.
  • You have questions or concerns about your condition or care.


  • Drink liquids as directed. Liquids will help flush the contrast material out of your body. Ask how much liquid to drink and which liquids are best for you.
  • Apply ice to your injection site. Ice helps decrease swelling and pain. Use an ice pack, or put crushed ice in a plastic bag. Cover it with a towel and place it on your low back for 15 to 20 minutes every hour or as directed.
  • Do not take a bath or get into a hot tub after your procedure. Take a shower instead. Soaking your puncture site in a bath or hot tub increases your risk for infection.
  • Limit physical activity that causes pain. Rest as needed. Ask your healthcare provider how long you should limit activity.
  • Keep a pain diary. Write down when your pain happens, how severe it is, and any other symptoms you have with your pain. A diary will help you keep track of your pain. It may also help your healthcare provider find out what is causing your pain.

Follow up with your healthcare provider as directed:

You may need more injections or other treatments. Bring your pain diary to your visits. Write down your questions so you remember to ask them during your visits.

© Copyright IBM Corporation 2021 Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. All illustrations and images included in CareNotes® are the copyrighted property of A.D.A.M., Inc. or IBM Watson Health

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.