Surg Neurol
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Spontaneously occurring epidural hematomas for which no etiology is identified are rare phenomenon. These are often neurosurgical emergencies; therefore, prompt diagnosis and treatment are paramount. Because of the rarity of this condition, we have illustrated in this recent case its presentation, evaluation and management. ⋯ This report highlights the various presentations, evaluation, and management options for this rare diagnosis. It emphasizes the necessity of prompt diagnosis for possible emergent intervention.
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Release of tethered spinal cord by sectioning of the filum terminale carries a significant risk of injury to the neighboring motor and sensory nerve roots. Intraoperative neurophysiological monitoring techniques can help to minimize these adverse neurologic outcomes. ⋯ The often dramatic difference in the threshold of the filum terminale and adjacent motor nerve roots (100:1) helps to identify, isolate, and safely section the filum terminale. Tethered cord release using intraoperative neurophysiological monitoring is safe and in the majority of cases leads to improvement or at least, stabilization of neurologic function. Monitoring prevented intraoperative nerve root injury that might have resulted in immediate onset of new neurologic deficits caused by the surgical procedure.