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Related Experiment Videos

Scarring around cervical epidural stimulating electrode.

A F Reynolds, A G Shetter

    Neurosurgery
    |July 1, 1983
    PubMed
    Summary
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    Spinal cord stimulation electrode placement can cause scarring, leading to neurological issues. Prompt surgical removal of scar tissue reversed a patient's quadriparesis, highlighting the importance of addressing this complication.

    Area of Science:

    • Neurosurgery
    • Neurology
    • Biomaterials

    Background:

    • Concerns regarding scar tissue formation around implanted electrodes for spinal cord stimulation (SCS) have persisted since its inception.
    • Epidural stimulation techniques for pain and spasticity management face similar challenges with potential dural scarring.

    Observation:

    • A patient receiving a C-2-C-4 electrode for torticollis developed spastic quadriparesis and diminished stimulation efficacy three months post-implantation.
    • Reexploration revealed dense scar tissue encasing the electrode and constricting the cervical spinal cord.

    Findings:

    • Microdissection successfully removed the scar tissue, restoring free pulsation of the dura mater.
    • The patient's quadriparesis resolved following the scar removal.
    • Microscopic analysis of the scar tissue showed linearly arranged fibroblastic nuclei, with the cause of the excessive response remaining unclear (electrical stimulation, electrode materials, or surgical technique).

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    Implications:

    • This case underscores the potential for significant neurological compromise due to scar formation around spinal cord stimulation electrodes.
    • Prompt surgical intervention and scar revision can reverse debilitating neurological deficits.
    • Further research is needed to elucidate the etiology of the fibroblastic response to optimize SCS device safety and efficacy.