The long spine board is more properly known as a rescue board. It's use is in the extrication of patients from entrapment situations. It may be used in the transfer of patients, although the scoop-stretcher and/or vacuum mattress are as safe and more comfortable.
The long spine board is not used to 'splint' the spine and offers no added protection once the patient is in hospital on a firm surface such as a hospital trolley or gurney. The spine board interferes with investigations such as X-rays and is extremely uncomfortable. Prolonged use (even as little as 2 hours) can lead to pressure ulceration.
Patients should be removed from the spine board as soon as possible - usually after the initial assessment and management of the primary survey. Obviously this should not take priority over life-threatening conditions. Full spinal immobilisation should be continued until the spine is cleared.