Sl Screw Percutaneous

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  • Attach the stimulator clip to an insulated drill bit. (alternatively you can use a normal drill bit and work through a non-conducting cannula which has been inserted all the way to the bone).
  • Prepare the hole using the drill while stimulating at 10mA and using fluoro as needed to assist with direction.
  • If a ‘STOP’ response is triggered, reposition the drill away from the surface where a nerve is most likely located (usually near the neural foramen, the spinal canal or near the anterior border of S1).
  • Repeat until a ‘GO’ is maintained throughout the path of the drill bit.
  • Insert guidewire through the drill bit.
  • Insert screw over wire.
  • {Optional} Stimulate the screw head by direct contact through the insulated cannula.