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Related Experiment Videos

Extradural cortical stimulation for central pain.

S Canavero1, V Bonicalzi

  • 1Turin Advanced Neuromodulation Group, Turin, Italy. solara@infinito.it

Acta Neurochirurgica. Supplement
|August 19, 2007
PubMed
Summary
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Motor cortex stimulation (MCS) offers relief for central pain caused by nervous system injuries. Predicting successful outcomes involves assessing motor function, sensory loss, and responses to specific tests like TMS.

Area of Science:

  • Neurosurgery
  • Pain Management
  • Neurology

Background:

  • Central pain, arising from central nervous system injuries, poses significant therapeutic challenges.
  • Motor cortex stimulation (MCS) is an emerging treatment for central pain.
  • MCS involves placing a stimulating electrode on the motor cortex dura.

Purpose of the Study:

  • To detail the surgical technique and stimulation protocol for motor cortex stimulation (MCS).
  • To review existing studies on MCS for central pain, including results, side effects, and complications.
  • To discuss future prospects and developments in MCS for central pain management.

Main Methods:

  • Surgical implantation of a stimulating plate on the motor cortex dura under local anesthesia.
  • Targeting the cortical area using anatomical localization (CT, MRI), neuronavigation, and intraoperative assessments (neurophysiological recordings, fMRI).

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  • Utilizing predictive factors for analgesia, including motor function, sensory deficits, and responses to pharmacological (barbiturate, ketamine, propofol) and transcranial magnetic stimulation (TMS) tests.

    • Main Results:

    • MCS has shown potential to alleviate central pain by modulating activity in somatosensory areas, thalamus, and spinal pathways.
    • Predictive factors for successful MCS analgesia include preserved motor function, minimal sensory loss, and positive responses to specific diagnostic tests.
    • The review covers results, side effects, and complications from various studies on MCS.

    Conclusions:

    • Motor cortex stimulation is a viable therapeutic option for central pain.
    • Careful patient selection based on predictive factors is crucial for optimizing MCS outcomes.
    • Further research and technological advancements will likely enhance the efficacy and application of MCS for central pain.