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Sacroiliac (SI) joint injections provide both diagnostic and therapeutic information.
Under fluoroscopy, a needle is introduced into the SI joint. Following demonstration of needle placement using radiopaque contrast material, a combination of steroid and local anesthetic is injected into the joint. If purely diagnostic information is desired, injection of anesthetic alone may be performed.
An initial report is obtained from the patient concerning the change in their pain post-injection compared to pre-injection. A second report is obtained 1 – 2 weeks later.
SI joint injections are useful in determining the role SI joints play in pain generation. This injection is the only clinically validated tool for diagnosis of SI pain.
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