deterioration and informs treatment and prognosis. The ASIA Impairment Scale outlined above is used to determine the level and severity of injury. Management Prehospital treatment The first stage in the management of a suspected spinal cord injury is geared toward basic life support and preventing further injury: maintaining airway, breathing, and circulation and restricting further motion of the spine. In the emergency setting, most people who has been subjected to forces strong enough to cause SCI are treated as though they have instability in the spinal column and have spinal motion restricted to prevent damage to the spinal cord. Injuries or fractures in the head, neck, or pelvis as well as penetrating trauma near the spine and falls from heights are assumed to be associated with an unstable spinal column until it is ruled out in the hospital. High-speed vehicle crashes, sports injuries involving the head or neck, and diving injuries are other mechanisms that indicate a high SCI risk. Since head and spinal trauma frequently coexist, anyone who is unconscious or has a lowered level of consciousness as a result of a head injury is spinal motion restricted. A rigid cervical collar is applied to the neck, and the head is held with blocks on either side and the person is strapped to a backboard. Extrication devices are used to move people without excessively moving the spine if they are still inside a vehicle or other confined space. The use of a cervical collar has been shown to increase mortality in people with penetrating trauma and is thus not routinely recommended in this group. Modern trauma care includes a step called clearing the cervical spine, ruling out spinal cord injury if the patient is fully conscious and not under the influence of drugs or alcohol, displays no neurological deficits, has no pain in the middle of the neck and no other painful injuries that could distract from neck pain. If these are all absent, no spinal motion restriction is necessary. If an unstable spinal column injury is moved, damage may occur to the spinal cord. Between 3 and 25% of SCIs occur not at the time of the initial trauma but later during treatment or transport. While some of this is due to the nature of the injury itself, particularly in the case of multiple or massive trauma, some of it reflects the failure to adequately restrict motion of