Major risks and complications of cervical epidural steroid injections: An updated review

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Abstract
Too many patients, with or without significant cervical disease, unnecessarily undergo cervical epidural steroid injections (CESIs). These include interlaminar (ICESI) and transforaminal ESI (TF-CESI) injections that are not Food and Drug Administration (FDA) approved, have no documented long-term efficacy, and carry severe risks and complications. Here we reviewed recent reports of morbidity and mortality attributed to the various types of CESIS. Major complications included; epidural hematomas, infection (abscess/meningitis), increased neurological deficits due to intramedullary (quadriparesis/quadriplegia), and intravascular injections (e.g., vertebral artery injections leading to cord, brain stem, and cerebellar strokes). The latter injections leading to strokes were typically attributed to the particulate steroid matter (e.g., within the methylprednisolone injection solution) that embolized into the distal arterial branches. Complications of cervical CESI/TF-CESI injections producing epidural hematoma, new neurological deficits (intramedullary injections), or intravascular injections resulting in strokes to the cord, brain stem, and cerebellum are often underreported. Interestingly, several other cases involving adverse events of CESI/TF-CESI may now be found in the medicolegal literature. Cervical epidural injecions (e.g., CESI, ICESI, and TF-CESI) which are not FDA approved, provide no long-term benefit, and are being performed for minimal to no indications. They contribute to significant morbidity and mortality, including; epidural hematomas, infection, inadvertent intramedullary cord injections or cord, brain stem, and cerebellar strokes. Furthermore, these injections are increasingly required by insurance carriers prior to granting permission for definitive surgery, thus significantly delaying in some cases necessary operative intervention, while also subjecting patients at the hands of the insurance companies, to the additional hazards of these procedures.

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