How does sacroiliac joint injection work?

The sacroiliac joints connect the base of the spine with the pelvis. After skin preparation and local numbing, a clinician guides a needle toward the joint, often with imaging, and injects a small amount of medicine. Local Anaesthetic can temporarily reduce sensation and help show whether the joint is contributing to pain. Corticosteroid may calm inflammation over a longer period.

The injection is used selectively for suspected Sacroiliac Joint Dysfunction and is one part of an assessment and treatment plan. Relief, if it occurs, is interpreted alongside your history and examination; it does not by itself explain every cause of lower-back, buttock or leg pain.

Tell the clinician about medicines, allergies, diabetes, infection, pregnancy or bleeding problems. Arrange transport if your leg feels numb or weak afterward. Follow instructions about bathing, activity and medicines. Keep notes on pain, movement and any temporary numbness, then discuss the response at follow-up. Gentle activity is often reintroduced according to the treating team’s advice.

Seek prompt medical advice for increasing redness, warmth, drainage, fever, severe or persistent numbness, new weakness, loss of bladder or bowel control, or pain that becomes markedly worse. Emergency help is needed for breathing difficulty, fainting or signs of a severe allergic reaction.

Ask what the injection is intended to test or treat, which medicine will be used, how to manage diabetic or blood-thinning medicines, and which symptoms should trigger a call after the procedure.