Emergency Medicine

Canadian C-Spine Rule Calculator

Cervical spine imaging decision rule

Clinical use

Use this calculator for cervical spine imaging decision rule in theemergency medicine workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.

Interpretation

Three-step algorithm: high-risk → can't clear; low-risk features present → assess ROM; if can rotate 45° L+R → cleared. Sensitivity 99.4% for significant C-spine injury.

Required inputs

Age 65 +
Dangerous Mechanism
Paresthesias Extremities
Simple Rear End MVC
Sitting Position In ED
Ambulatory At Any Time
Delayed Onset Neck Pain
Absence Midline Tenderness
Able To Rotate Neck 45

Evidence and limitations

This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.

References

Stiell IG et al. JAMA 2001;286:1841-1848

Frequently asked questions

What is the Canadian C-Spine Rule?

Canadian C-Spine Rule is a clinical calculator used for Cervical spine imaging decision rule.

How do I interpret the Canadian C-Spine Rule?

Three-step algorithm: high-risk → can't clear; low-risk features present → assess ROM; if can rotate 45° L+R → cleared. Sensitivity 99.4% for significant C-spine injury.

What inputs are required for the Canadian C-Spine Rule?

Required inputs include Age 65 +, Dangerous Mechanism, Paresthesias Extremities, Simple Rear End MVC, Sitting Position In ED, Ambulatory At Any Time, Delayed Onset Neck Pain, Absence Midline Tenderness, Able To Rotate Neck 45.