When I was first trained in EMS, we were taught and graded on padding the voids between the spine board and body during spinal immobilization. Humans have contours in their spine. Padding helps improve patient comfort.
Forcing patients to lie flat on a rigid board is uncomfortable and cold. It can also cause pressure sores during long transports.
One thing I learned years ago is that pressure on soft tissue that is as little as 32mm of mercury can cause skin to start breaking down. That is why many trauma centers switch the EMS collar out as soon as possible for a softer rehab collar. Continue