Final answer:
Spinal motion restriction should be used on a victim with a suspected spinal injury to minimize further damage. It involves keeping the individual's head, neck, and back as immobile as possible until emergency services arrive.
Step-by-step explanation:
You should use spinal motion restriction on a victim who is suspected to have a spinal injury. This could apply in situations such as motor vehicle accidents, falls from significant heights, or any incident that involves a forceful impact to the head or torso. While waiting for help to arrive, it is crucial to minimize movement of the victim's head, neck, and back to prevent any potential exacerbation of the injury. Caregivers or bystanders should keep the person still, support their head and neck in the position found, and avoid moving the person unless it is absolutely necessary for safety reasons.