- 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
The Spine Book 