Cervical interfascial plane (CIP) block and multifidus cervicis plane (MCP) block: Similarities and tips

We read with interest the Correspondence by Drs. Ueshima and Otake regarding cervical interfascial plane (CIP) block [1]. They described that CIP block was administered with local anesthetic injection between the multifidus and longissimus muscles at the level of C5, achieving C2-6 analgesic effect observed by pinprick test. We would like to express our concerns about this technique.

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