Sacroiliac (SI) Joint Injection
(Therapeutic or Diagnostic)
The sacroiliac joints are located next to the lumbar spine, connecting the sacrum with the hip on the right and left sides. Joint inflammation and/or dysfunction in these areas can lead to various levels of pain. These therapeutic injections can be performed to provide pain relief associated with the joint, and also for diagnostic injections to confirm a diagnosis of sacroiliac joint dysfunction.
Before the Procedure
- Do not eat for six hours before the procedure, although you may drink clear liquids up to two hours before the procedure.
- Take your regular medications with a small sip of water.
- Arrive 30 minutes before your procedure.
- You must bring a driver.
- Do not take aspirin seven days prior to your procedure, and avoid taking NSAIDs three days prior to your procedure. Please inform us if you are taking any blood thinners.
- Wear loose, comfortable clothing.
How Is It Performed?
You will be asked to lie on your stomach on a table with a pillow placed under your abdomen. The injection site is prepped and numbed with medication.
A needle is then inserted into the joint and placement is confirmed with a live X-ray (fluoroscopy) machine. Contrast is injected into the joint once the correct placement has been confirmed, which is then followed by steroid medication.
The diagnostic injections are performed in the same manner, but with an anesthetic agent such as lidocaine.
After The Procedure
Your pain may improve shortly after the injection but may return once the numbing medicine starts to wear off. Your pain may worsen for a day or two after the injection because the effects of steroid injection can sometimes take 2-3 days to occur. You may apply an ice pack 3-4 times a day to help alleviate pain at the injection site, if needed.