A good deal of controversy currently surrounds the role of collars and extrication devices in the on-site immobilization of suspected injuries to the cervical spine. The plethora of manufactured items readily available for this purpose reinforces the general impression that no one device is universally acceptable.

In his book, Spinal Cord Injuries – Comprehensive Management and Research, Sir Ludwig Guttman stressed the importance of keeping all cervical movements to a minimum. Flexion, hyperextension and rotatory movements are particularly dangerous. The most difficult circumstances are those in which an unconscious front-seat occupant requires extrication from a damaged motor vehicle. Here the strict first-aid drill of gentle lifting by a six man team maintaining rigid traction in the line of the spine becomes impracticable and the rescuers have to resort to the use of aids.