Sacroiliac Joint Injections for Low Back And Buttock Pain

November 22, 2024

Discover How Sacroiliac Joint Injections Can Provide Effective Relief for Chronic Pain in the Lower Back and Buttocks

Are you struggling with chronic pain in your lower back or buttocks that just won’t go away? Sacroiliac (SI) joint injections could be the answer you’ve been looking for. The sacroiliac joints, located on each side of your lower spine, play a key role in connecting the spine to the pelvis. When these joints become inflamed or irritated, they can cause persistent pain in the lower back, buttocks, and even the legs. In this article, we’ll explain what sacroiliac joint injections are, how they work, and why they’re an effective treatment for this type of pain. 

What is a Sacroiliac Joint Injection?

A sacroiliac joint injection is a minimally invasive procedure that delivers pain-relieving and anti-inflammatory medication directly into the sacroiliac joint. These joints can become painful due to arthritis, injury, or conditions that put stress on the lower spine and pelvis. By targeting the exact source of pain, SI joint injections offer relief that can last for weeks or even months. 

How Does a Sacroiliac Joint Injection Work?

Let’s break down the steps of the SI joint injection procedure to understand how it helps relieve pain: 

  • Preparation: You’ll be positioned comfortably on an exam table, usually lying on your stomach. The skin around the injection site is cleaned and sterilized, and a local anesthetic is applied to numb the area, minimizing discomfort. 
  • Imaging Guidance: The doctor uses fluoroscopy (a live X-ray) to guide a thin needle into the sacroiliac joint. This imaging technology ensures precision and accuracy, targeting the exact area causing pain. 
  • Injecting the Medication: Once the needle is correctly positioned, a mixture of anesthetic and corticosteroid is injected into the sacroiliac joint. The anesthetic provides immediate pain relief, while the corticosteroid reduces inflammation, offering longer-lasting results. 
  • Pain Monitoring: After the injection, you’ll be monitored briefly to ensure there are no adverse reactions. You’ll also be asked to assess your pain levels over the next few days to gauge the injection’s effectiveness. 

Benefits of Sacroiliac Joint Injections:

SI joint injections provide several important benefits for people with chronic lower back and buttock pain: 

  • Targeted Pain Relief: By delivering medication directly to the affected joint, SI joint injections provide focused relief at the source of pain. 
  • Quick and Minimally Invasive: The procedure is typically completed in under 30 minutes, and patients can usually go home the same day. 
  • Reduced Inflammation: The corticosteroid in the injection helps reduce joint inflammation, leading to extended pain relief. 
  • Diagnostic Value: If the injection relieves your pain, it confirms that the SI joint is the source of your discomfort, which helps guide future treatment options. 

Who Should Consider Sacroiliac Joint Injections?

If you experience chronic pain in your lower back or buttocks that hasn’t responded to other treatments, sacroiliac joint injections may be an ideal option. SI joint injections are especially beneficial for people with: 

Sacroiliac Joint Dysfunction

This condition occurs when the SI joint becomes misaligned or inflamed due to injury, overuse, or arthritis. 

Arthritis in the SI Joint

Conditions like osteoarthritis and rheumatoid arthritis can cause inflammation and pain in the SI joint. 

Pregnancy-Related Pelvic Pain

Hormonal changes and the extra weight during pregnancy can put stress on the SI joints, leading to discomfort. 

Before recommending SI joint injections, your doctor will assess your pain history, previous treatments, and overall health to determine if this option is right for you.

What to Expect After a Sacroiliac Joint Injection:

After the procedure, you may feel some relief immediately due to the local anesthetic, though full effects may take a few days as the corticosteroid begins to work. Pain relief from SI joint injections varies from person to person; some people experience relief for several weeks, while others find their pain reduced for several months. 



Following the injection, it’s important to avoid strenuous activities for a few days to allow the medication to work effectively. Your doctor may recommend light activity as tolerated, gradually building back up to your routine. 

Risks and Side Effects:

While sacroiliac joint injections are generally safe, there are a few potential risks and side effects: 

  • Temporary Pain or Soreness at the Injection Site: Mild soreness is common and typically subsides within a few days. 
  • Temporary Numbness or Weakness: Some patients may experience numbness or weakness in the lower back or buttocks, but this usually fades as the anesthetic wears off. 
  • Allergic Reaction: Rarely, patients may be allergic to the anesthetic or corticosteroid used in the injection. Be sure to inform your doctor of any allergies. 
  • Infection or Bleeding: Though rare, there’s a slight risk of infection or bleeding at the injection site. 

Your healthcare provider will discuss these risks with you and take steps to make the procedure as safe and comfortable as possible. 

Risks and Side Effects:

While sacroiliac joint injections are generally safe, there are a few potential risks and side effects: 

  • Temporary Pain or Soreness at the Injection Site: Mild soreness is common and typically subsides within a few days. 
  • Temporary Numbness or Weakness: Some patients may experience numbness or weakness in the lower back or buttocks, but this usually fades as the anesthetic wears off. 
  • Allergic Reaction: Rarely, patients may be allergic to the anesthetic or corticosteroid used in the injection. Be sure to inform your doctor of any allergies. 
  • Infection or Bleeding: Though rare, there’s a slight risk of infection or bleeding at the injection site. 

Your healthcare provider will discuss these risks with you and take steps to make the procedure as safe and comfortable as possible. 

How Effective Are Sacroiliac Joint Injections?

Research has shown that sacroiliac joint injections are effective for many people with chronic back and buttock pain caused by SI joint dysfunction or arthritis. According to studies published in Pain Medicine Journal, SI joint injections can provide significant pain relief, improve function, and increase the quality of life for patients suffering from sacroiliac-related pain. 

At Arizona Pain Solutions, we understand how chronic lower back and buttock pain can disrupt your life. Our experienced providers are committed to finding the best pain relief solutions for you. If you’re considering sacroiliac joint injections, our team will guide you through every step, ensuring you feel informed and supported throughout your care. 


If you’re ready to explore sacroiliac joint injections for pain relief, contact Arizona Pain Solutions today to schedule a consultation. We’re here to answer any questions you have and help you on your journey to a more comfortable, pain-free life. Share your experiences or leave a question in the comments below! 



This article has been carefully reviewed and edited to ensure accuracy and clarity, reflecting our commitment to providing high-quality, reliable information. 

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