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Understanding Sacroiliac Joint Injections for Lower Back Pain

By March 5, 2025No Comments

Lower back pain can be a debilitating condition, and if you’ve been struggling with pain that radiates from the lower back to the buttocks or legs, the problem might lie in your sacroiliac (SI) joints. Sacroiliac joint dysfunction is a common cause of chronic lower back pain, but there is a treatment option that could bring you relief: sacroiliac joint injections. In this post, we’ll dive deep into what SI joint injections are, how they work, and what you can expect from this treatment. 

What is the Sacroiliac Joint?

The sacroiliac joints are located in the lower back, where the spine connects to the pelvis. There is one SI joint on each side of the body, and they are crucial for stabilizing the pelvis and supporting the weight of the upper body when standing, walking, or moving. 

Sacroiliac joint pain can occur when these joints become inflamed, injured, or irritated. This inflammation may be caused by a variety of factors, including arthritis, injury, or even pregnancy, which can alter the structure of the joints and put pressure on nearby nerves. 

How Sacroiliac Joint Injections Work

Sacroiliac joint injections are a minimally invasive procedure that delivers medication directly into the SI joint to reduce inflammation and alleviate pain. The injection typically contains a local anesthetic to numb the area, and sometimes a corticosteroid to reduce inflammation. 

During the procedure, your healthcare provider will use imaging technology, such as X-ray or fluoroscopy, to guide a needle into the targeted SI joint. The procedure is quick and typically done in an outpatient setting, meaning you can go home the same day. 

Benefits of Sacroiliac Joint Injections 

  1. Effective Pain Management 
    Sacroiliac joint injections can offer significant relief for patients suffering from pain caused by SI joint dysfunction. By reducing inflammation, the injections help lower back pain, allowing patients to return to daily activities more comfortably. 
  2. Non-Surgical Treatment Option 
    One of the key advantages of SI joint injections is that they provide a non-invasive alternative to surgery. For many patients, injections can offer relief without the need for more invasive procedures. 
  3. Diagnostic Role
    In addition to being a treatment, SI joint injections can also serve as a diagnostic tool. If the injection provides immediate pain relief, it can confirm that the SI joint is the source of the pain. 

Risks and Considerations 

Like any medical procedure, sacroiliac joint injections carry some risks. While they are generally safe, some patients may experience side effects such as infection, bleeding, or allergic reactions. The procedure may also cause temporary discomfort at the injection site. 

SI joint injections are typically recommended for patients with chronic lower back pain who have not found relief from other treatments, such as physical therapy or oral medications. However, not everyone is a candidate for the procedure. For example, individuals with certain infections or allergies to the injection medications may not be suitable candidates. 

After the injection, patients are usually advised to avoid intense physical activity for a short period to allow the area to heal properly. 

How Effective Are Sacroiliac Joint Injections?

The effectiveness of SI joint injections varies from patient to patient. However, many people experience significant pain relief, sometimes within just a few days of receiving the injection. The relief can last anywhere from several weeks to several months, depending on the individual. 

In general, research has shown that SI joint injections provide effective and long-lasting relief for most people, helping to improve their mobility and quality of life. 

Alternatives to Sacroiliac Joint Injections

While SI joint injections can be highly effective, there are other options for managing lower back pain. Physical therapy is often recommended as a complementary treatment, as it focuses on strengthening the muscles around the SI joint and improving flexibility to reduce pain and prevent future injury. 

Other injection treatments, such as epidural steroid injections or PRP (platelet-rich plasma) therapy, may also be considered depending on the nature of the pain and the specific diagnosis. 

Conclusion

Sacroiliac joint injections are a proven and effective treatment for individuals suffering from chronic lower back pain caused by SI joint dysfunction. They offer quick relief, are minimally invasive, and can even serve as a diagnostic tool to identify the source of pain. While there are some risks involved, the benefits of SI joint injections—especially for those who have not found relief through other methods—are considerable. 

If you’re dealing with persistent lower back pain and believe the SI joint might be the culprit, consult with your healthcare provider to determine if sacroiliac joint injections could be the right solution for you. This treatment could be the key to getting you back on your feet and living pain-free. 

Dr. Daniel Choi

Author Dr. Daniel Choi

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