The Shift from Immobilization to Restriction
EMS has shifted from routine spinal immobilization to selective spinal motion restriction (SMR). Research has shown that routine backboard use does not improve outcomes and can cause pain, pressure injuries, and respiratory compromise. The NREMT reflects this updated practice. Understanding when and how to apply SMR is essential for the exam.
When to Apply Spinal Motion Restriction
Apply SMR when the patient has a significant mechanism of injury AND any of the following: midline spinal tenderness, neurological deficits (numbness, tingling, weakness), altered mental status, distracting injuries, or intoxication that prevents reliable assessment. If the patient is alert, oriented, has no midline tenderness, no neurological complaints, no distracting injuries, and no intoxication, SMR may not be necessary.
Techniques for Spinal Motion Restriction
The cervical collar (C-collar) is applied to limit cervical spine movement. Size the collar before application using the manufacturer's sizing method. Maintain manual stabilization until the patient is fully secured. For transport, a vacuum mattress or scoop stretcher is preferred over a long backboard for extended transport. If a backboard is used, pad it to reduce pressure and discomfort.
Standing Takedown and Log Roll
The standing takedown is used to place a standing patient onto a backboard when full SMR is indicated. Maintain manual in-line stabilization throughout the procedure. The log roll is used to place a supine patient onto a backboard or to assess the posterior body. Roll the patient as a unit to minimize spinal movement. Both techniques require coordinated team communication.
Common Exam Questions
Expect scenarios that test your clinical decision-making about when SMR is indicated. The NREMT wants to see that you can assess a patient, identify risk factors for spinal injury, and make an appropriate decision rather than automatically immobilizing every trauma patient. Know the criteria for selective SMR and be able to justify your decisions.