The sacroiliac (SI) joints connect your spine to your pelvis, acting as shock absorbers. When these joints become inflamed or dysfunctional, they can cause lower back, buttock, or hip pain. An SI joint injection serves as a method to both diagnose the source of pain and provide relief. Many individuals are concerned about potential discomfort during this procedure.
Understanding Discomfort During the Procedure
Medical professionals employ several strategies to minimize discomfort during an SI joint injection. The skin around the injection site is first cleaned with an antiseptic solution, followed by the application of a local anesthetic to numb the area. This numbing medication, typically lidocaine, may cause a brief stinging or burning sensation, which usually subsides within a few seconds as the anesthetic takes effect. This initial sensation is often described as the most uncomfortable part of the entire process.
Once the skin is numb, a thin needle is carefully advanced towards the SI joint, often guided by X-ray (fluoroscopy) or ultrasound imaging to ensure precise placement. During this stage, patients might experience a feeling of pressure or a dull ache as the needle approaches the joint; if any significant pain is felt, additional local anesthetic can be administered. A small amount of contrast dye is then injected to confirm the needle’s position before the therapeutic medication, which often includes a local anesthetic and a corticosteroid, is delivered. This final injection may also cause a temporary stinging or burning sensation. The procedure typically lasts about 15 to 30 minutes.
What to Expect Immediately After the Injection
Following an SI joint injection, patients may experience some immediate sensations and potential discomfort. Soreness or bruising at the injection site is common, which is a normal response to the needle insertion and injected medication. Some individuals might also experience temporary numbness or weakness in their leg on the side of the injection, caused by the local anesthetic. This typically resolves within a few hours.
While the numbing medication provides immediate pain relief, this effect is temporary and may wear off within a few hours. It is not uncommon for the original pain to return or even temporarily worsen, known as a “flare-up,” as the local anesthetic dissipates and before the corticosteroid begins to take effect. The full anti-inflammatory benefits of the steroid typically manifest within 24 to 72 hours, though for some individuals, it may take up to a week. This temporary increase in pain or soreness usually lasts for a day or two after the procedure.
Tips for a More Comfortable Experience
Preparing for an SI joint injection can contribute to a more comfortable experience. Prior to the procedure, discuss any concerns about pain or anxiety with your healthcare provider. They can explain the process in detail and may offer medication to help you relax during the injection. Inform your doctor about all current medications, including blood thinners, as some may need to be temporarily stopped.
During the injection, focusing on relaxation techniques, such as deep breathing, can help manage any discomfort. Communicating openly with the medical team about any sensations you are experiencing allows them to adjust as needed, potentially by administering more local anesthetic. After the procedure, applying an ice pack to the injection site can help alleviate soreness and bruising. Over-the-counter pain relievers may also be used to manage any post-injection discomfort. It is generally recommended to avoid strenuous activities for the remainder of the day and to follow any specific activity modifications or bathing instructions provided by your doctor.