Inclusion criteria: GCS 15, stable trauma patients
Any high-risk factor?
Yes → obtain C spine imaging.
Any low-risk factor which allows safe ranging of neck?
No → obtain C spine imaging.
Able to actively rotate neck 45° left/right?
No → obtain C spine imaging.
Yes → no radiography.
Steil et al. The Canadian C-Spine Rule versus the NEXUS Low-Risk Criteria in Patients with Trauma. NEJM. 2003. 349(26):2510-8.