Regional analgesia: A sacroiliac joint injection is an injection of local anesthetic, typically combined with a glucocorticoid (form of steroid), into the joint to relieve inflammation and pain associated with sacroliitis. A cervical nerve block is an injection of local anesthetic designed to "block" a cervical nerve for the purpose of pain relief, or pain prevention, as for a surgical procedure on the arm or hand.
Answered 2/2/2017
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Very different: An si injection is an injection of the joint between the spine and the tailbone. A cervical nerve block is an injection of one of the nerves in the cervical spine.
Answered 8/15/2013
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