Prospective Pilot Study Validating the Canadian C-Spine Rule Pre-hospital

Inclusion Criteria: * Alert, stable, adult patients presenting with an acute possible injury to the cervical spine * Alert: GCS ≥ 14 * Stable: * systolic blood pressure ≥ 90 mmHg * respiratory frequency 12 - 20 / min * adult ≥ 18 years old * Acute: ≤ 4 * Possible injury to the cervical spine: * posterior neck pain following any mechanism * no neck pain but visible injury above the clavicles * no neck pain or visible injury above the clavicles but a mechanism that indicates a cervical spine injury Exclusion Criteria: * Acute paralysis (quadriplegia, paraplegia) * Penetrating trauma to the neck * Patients with known vertebral disease (ankylosing spondylitis, rheumatoid arthritis, spinal stenosis, or previous cervical spine surgery) * Pregnancy