Rolandic Anatomy
Groove for Vertebral Artery
AI-powered interactive skeletal anatomy for medical and surgical education
A groove on the superior arch of the atlas (C1). The artery is vulnerable here during neck surgery; an anatomical variant called a "Ponticulus Posticus" (a bony bridge over the groove) can complicate the placement of spinal screws.
Sources and review
No verified external sources are linked on this page yet.
Review: Not yet medically reviewed.
Educational content only. Not medical advice. For clinical decisions, consult authoritative sources and qualified clinicians.