Analgesic efficacy of paraspinal interfascial plane blocks performed with the use of neurophysiology monitoring for posterior cervical laminectomy surgery: a case series.

Posterior cervical spine surgery often requires large posterior midline incision which can result in poorly controlled postoperative pain, arises from iatrogenic mechanical damage, intraoperative retraction and resection to structures such as bone, ligaments, muscles, intervertebral disks, and zygapophysial joints. Local anesthetics may be utilized for infiltration of the surgical wound; however, their analgesic efficacy has not been studied in this surgical approach. Here we report a case series. Given the potential for targeted sensory dorsal ramus nerve blocks to provide better and extended analgesia, we explored the feasibility of using cervical paraspinal interfascial plane (PIP) blocks in conjunction with neurophysiologic monitoring for postoperative analgesia after posterior cervical laminectomy. Our experience with the cervical paraspinal interfascial plane blocks has revealed that they can be used safely without affecting neurophysiologic monitoring and result in better pain control and reduced opiate use in the postoperative period. Cervical PIP blocks may be useful in controlling pain for posterior cervical laminectomy surgery without compromising neurophysiologic monitoring.