If you’ve been having a robust discussion about spinal immobilisation of patients with ‘mechanism’ recently, you’ll find this summary from EM Docs very useful for addressing the arguments which keep coming up;

http://www.emdocs.net/pre-hospital-management-of-spinal-injuries-debunking-the-myths-of-the-long-backboard

(I’m yet to encounter a conscious patient with altered sensation or deficits who hasn’t self-protected their spine)