Canadian C-Spine Rule

Apply the Canadian C-Spine Rule to decide imaging in alert, stable blunt trauma patients. Step 1: Any high-risk factor (age 65 or older, dangerous mechanism, paresthesias)? Imaging required. Step 2: Any low-risk factor allowing safe ROM assessment? Proceed to Step 3. Step 3: Can patient actively rotate neck 45 degrees left and right? No imaging needed. Sensitivity 100%, specificity 42%.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Apply the Canadian C-Spine Rule to decide imaging in alert, stable blunt trauma patients. Step 1: Any high-risk factor (age 65 or older, dangerous mechanism, paresthesias)? Imaging required. Step 2: Any low-risk factor allowing safe ROM assessment? Proceed to Step 3. Step 3: Can patient actively rotate neck 45 degrees left and right? No imaging needed. Sensitivity 100%, specificity 42%. Use the canadian c-spine rule result to inform your calculation.

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Frequently Asked Questions