Overview
The SI joint sits where your spine meets the pelvis. When inflamed or unstable it can cause low-back, buttock, and sometimes leg pain. An SI joint injection places anaesthetic ± steroid into the joint to reduce inflammation. It is used both to diagnose and to treat pain.
Frequently Asked Questions
Yes, diagnostic SI joint blocks are commonly used.
Many patients experience mid-term pain relief; response varies.
Weeks to months; repeat injections may be needed.
Yes, with imaging guidance, side effects are usually mild and short-lived.
Often yes, in severe chronic cases fusion may be considered.
