Sacroiliac (SI) Joint Injection

Our team has successfully enabled countless patients in our community to enjoy pain-free movement through targeted SI Joint injections

What are Sacroiliac (SI) joint injections

Sacroiliac (SI) joint injections are a therapeutic procedure used to diagnose and treat pain arising from the SI joint, where the spine meets the pelvis. These injections serve both diagnostic and therapeutic purposes: they can confirm the SI joint as the pain source when the injection of a local anesthetic relieves the patient's discomfort, and they can provide longer-term relief with the administration of corticosteroids to reduce inflammation. Performed under fluoroscopic (X-ray) guidance to ensure accuracy, the procedure involves injecting a mixture of anesthetic and steroid medications directly into the SI joint. This targeted approach can significantly alleviate pain and reduce inflammation in patients with SI joint dysfunction, a common condition that can cause lower back, buttock, and sciatic nerve pain.

The process is minimally invasive and usually done on an outpatient basis, allowing patients to go home the same day. Most patients experience minimal discomfort during the injection, and any soreness at the injection site typically resolves within a few days. SI joint injections are considered when conservative treatments like physical therapy, oral medications, and lifestyle changes have not provided adequate relief. While many patients report significant pain reduction following the injection, the duration of relief varies; some may benefit from repeated injections. As with any medical procedure, there are risks, though rare, including infection, bleeding, and allergic reactions to the injected medications. It's crucial for patients to discuss their health history and concerns with their healthcare provider to determine if SI joint injections are an appropriate treatment option.

What are the benefits and risks of Sacroiliac (SI) joint injections?

Sacroiliac (SI) joint injections are utilized both for diagnosing and treating pain originating from the SI joint. These injections can provide significant benefits but also come with certain risks.


  • Pain Relief: One of the primary benefits is immediate and potentially long-lasting relief from SI joint pain, improving mobility and quality of life.
  • Diagnostic Tool: By delivering a local anesthetic directly into the SI joint, these injections can help confirm the SI joint as the source of pain if there's immediate relief, guiding further treatment.
  • Minimally Invasive: The procedure is less invasive compared to surgical options, with fewer complications and a quicker recovery time.
  • Reduced Inflammation: Corticosteroids used in the injections can significantly reduce inflammation within the joint, offering relief from pain and discomfort.
  • Delay or Avoid Surgery: For some patients, SI joint injections can provide enough relief to delay or avoid the need for more invasive surgical interventions.: For some patients, SI joint injections can provide enough relief to delay or avoid the need for more invasive surgical interventions.


  • Infection: Although rare, there's a risk of infection at the injection site or within the joint itself.
  • Injection Site Pain: Patients may experience temporary pain or discomfort at the site of the injection.
  • Allergic Reactions: There's a small risk of an allergic reaction to the medications used.
  • Increased Pain: Some individuals may experience a temporary increase in pain following the injection before the corticosteroid takes effect.
  • Nerve Damage: Very rarely, the needle could damage a nerve or cause other complications within the surrounding area.
  • Ineffectiveness: In some cases, the injection may not provide the desired level of pain relief, or the relief may be short-lived.

We will discuss these potential benefits and risks with you during a pain management consultation to determine if this treatment option is suitable for your specific condition and overall health profile.

Who is a good candidate for an Sacroiliac (SI) joint injection?

Good candidates for a Sacroiliac (SI) joint injection are individuals experiencing persistent pain attributed to the SI joint, which has not adequately responded to conservative treatments. These injections are particularly beneficial for patients with symptoms of SI joint dysfunction or inflammation, manifesting as lower back pain, buttock pain, and sometimes radiating leg pain that mimics sciatica. Ideal candidates typically exhibit the following characteristics:

  • Clear Diagnosis of SI Joint Dysfunction: Patients with a clinical diagnosis supported by physical examination findings and possibly imaging studies that indicate the SI joint as a primary source of pain.
  • Limited Relief from Conservative Measures: Those who have not experienced significant improvement from non-invasive treatments such as physical therapy, oral anti-inflammatory medications, and activity modification.
  • Significant Impact on Daily Activities: Individuals whose pain significantly affects their quality of life, limiting daily activities, work, or sleep.
  • Absence of Contraindications: No active infections, bleeding disorders, or allergies to the medications used in the injection.
  • Positive Response to Diagnostic Blocks: Patients who have experienced temporary relief from diagnostic SI joint blocks may be good candidates, as this indicates that their pain originates from the SI joint.

SI joint injections can serve both a therapeutic and diagnostic purpose, providing relief and helping to confirm the SI joint as the source of pain. A thorough evaluation is essential to determine if an SI joint injection is an appropriate and safe option for your specific situation.

How is a Sacroiliac (SI) joint injection performed?

The process involves the following steps:


  • Patient Evaluation: Before the procedure, a thorough evaluation including a medical history review and physical examination is conducted to ensure the SI joint is the source of pain. Imaging studies may also be reviewed.
  • Informed Consent: The patient is informed about the procedure, including its benefits, risks, and any alternatives, to obtain informed consent.

The Procedure

  • Positioning: The patient is positioned face down on an X-ray table to allow easy access to the SI joint.
  • Sterilization and Anesthesia: The skin over the SI joint is cleaned with an antiseptic solution, and a local anesthetic is applied to numb the area and minimize discomfort during the injection.
  • Fluoroscopic Guidance: Fluoroscopy, a type of real-time X-ray, is used to guide the needle precisely into the SI joint. This ensures accurate placement of the medication.
  • Injection: Once the needle is correctly positioned in the SI joint, a mixture of anesthetic and anti-inflammatory medication (usually a corticosteroid) is injected to reduce inflammation and alleviate pain.
  • Monitoring: After the injection, the patient is monitored for a short period for any adverse reactions. The total procedure usually takes less than 30 minutes.


  • Recovery: Patients can typically leave shortly after the procedure. They may experience immediate pain relief due to the anesthetic, with longer-term relief from the corticosteroid occurring within a few days to a week.
  • Follow-Up: Patients are usually advised to rest for the remainder of the day and may be given specific instructions regarding activities and pain management. A follow-up appointment is often scheduled to assess the effectiveness of the injection and plan further treatment if necessary.

The SI joint injection is a targeted approach to managing pain, offering significant relief for individuals with SI joint dysfunction. It's a valuable diagnostic and therapeutic tool, providing both immediate and long-term benefits for pain management.

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