Sacroiliac (SI) Joint Injection

The sacroiliac joint is a large joint that is formed by the ilium and the sacrum. When the joint becomes painful, it can cause pain in its immediate region or it can refer into your groin, abdomen, hip, buttock, or legs. 

How is the procedure done?

The procedure is done under fluoroscopy (live X-ray guidance). A local anesthetic (Lidocaine) is injected into the skin and tissues below, prior to the placement of the needle. After confirming the needle location, the physician will inject a mixture of a local anesthetic and steroid solution. The procedure itself takes approximately 10 minutes. 

How should I prepare for the procedure?

Unless otherwise instructed, you can eat and drink anything before the procedure. You can take all of your medications, except any blood thinning medication that you should have gotten permission to stop prior to the procedure. 

What should I expect after the procedure?

On occasion, you may feel numb or somewhat weak in your leg/legs for a few hours following the procedure. This is due to the local anesthetic and should go away after a couple hours. Sometimes your pain may get slightly worse as the local anesthetic wears off before the steroid becomes effective, usually in 3-5 days. 

What can I do after the procedure?

After the procedure, you will be required to have someone drive you home. You should limit your activity. The next day you should be able to resume your normal daily activities that you were doing prior to the injection.