Common causes of SI joint pain
- Arthritis or wear and tear
- Falls or other injuries
- Pregnancy-related changes
- Differences in leg length or walking pattern
- Inflammatory conditions
About the injection
Using X-ray or ultrasound guidance, the physician places numbing medicine and usually a steroid into the SI joint. The injection serves two purposes: it can relieve pain, and the response helps confirm whether the SI joint is the source of your pain.
What to expect
- The procedure is performed as an outpatient and typically takes only a few minutes.
- You may notice numbness right away, with steroid effects developing over several days.
- If injections help only for a short time, your provider may discuss other options such as radiofrequency ablation of the nerves that supply the joint, physical therapy, or referral for other treatments.
Preparing for your procedure
- Tell us about every medication you take, especially blood thinners (for example warfarin, apixaban, clopidogrel, or daily aspirin). Do not stop a blood thinner on your own — we will coordinate with the doctor who prescribes it.
- Let us know if you have diabetes, an allergy to contrast dye, iodine, latex, or local anesthetics, or if you may be pregnant.
- If you will receive sedation, plan on having an adult drive you home.
- Call us if you develop a fever or infection before your procedure date.
Risks
All procedures carry some risk. Depending on the treatment, possible risks can include soreness or bruising where the needle was placed, bleeding, infection, a temporary rise in pain, allergic reaction to a medication, and, rarely, nerve injury. If a steroid is used, some people notice short-term flushing, trouble sleeping, or higher blood sugar. Your provider will go over the specific risks, benefits, and alternatives for your situation before you decide.
Exercises you can do at home
Staying active is an important part of most pain treatment plans. See our si joint & hip exercises for gentle stretches and strengthening options in lying, seated, and standing positions. Please ask your provider before starting, especially after a procedure.
This page is for general education and is not a substitute for an evaluation by a medical professional. Results vary, and no treatment works for everyone. Your provider will discuss whether this option is appropriate for you, along with its benefits, risks, and alternatives. Insurance coverage varies by plan — please call to verify.