Regional anesthesia and pain medicine
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Reg Anesth Pain Med · Nov 1998
Injection of the piriformis muscle by fluoroscopic and electromyographic guidance.
There is not a universally accepted single technique for injection of the piriformis muscle that has validated exact placement of the needle tip within the piriformis muscle. ⋯ Using this methodology, injections on 17 occasions in 11 patients resulted in needle placement within the piriformis muscle.