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Related Experiment Video

Updated: Apr 21, 2026

Paradigms of Lower Extremity Electrical Stimulation Training After Spinal Cord Injury
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Spinal stimulator peri-electrode masses: case report.

Robert A Scranton1, Ioannis M Skaribas, Richard K Simpson

  • 1Department of Neurosurgery, Houston Methodist Neurological Institute; and.

Journal of Neurosurgery. Spine
|November 8, 2014
PubMed
Summary
This summary is machine-generated.

A rare complication of spinal cord stimulators (SCS) is a delayed mass causing spinal cord compression. Early recognition and surgical decompression are crucial for neurological recovery in patients experiencing such adverse events.

Keywords:
SCS = spinal cord stimulatorcomplicationelectrode massepidural massmyelopathyspinal stimulationtechnique

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Area of Science:

  • Neurosurgery
  • Neurology
  • Pathology

Background:

  • Minimally invasive percutaneous spinal cord stimulators (SCS) offer an alternative to paddle-type electrodes.
  • Delayed complications following SCS implantation require thorough investigation and understanding.

Observation:

  • A patient developed spastic quadriparesis nine months after cervical SCS implantation.
  • An epidural mass causing severe spinal cord compression was identified via MRI.
  • Histological examination revealed fibrotic tissue with granulomatous reactions, excluding infection or hemorrhage.

Findings:

  • A peri-electrode mass led to delayed spastic quadriparesis.
  • Surgical removal of the mass and decompression resulted in neurological improvement.
  • The mass exhibited a foreign body reaction without infectious or hemorrhagic etiology.

Implications:

  • Clinicians should be vigilant for delayed complications after SCS implantation.
  • Understanding the pathophysiology of peri-electrode masses is essential for risk assessment.
  • This case highlights the importance of considering mass formation as a cause of neurological decline post-SCS.