C1 Screw

  • C1 lateral mass 
    • Do not dissection above the posterior arch of C1 1cm lateral to midline – VA risk 
  • Artery travels on top of C1 in the Sulcus Arteriosus 
  • Entry point 
    • 2-3mm from the medial aspect of thte lateral mass of C1 
    • Section the C2 nerve root forr access 
    • Bipolar the venous plexus nearby