Results: Manual in-line stabilization resulted in significantly
less movement than cervical collar immobilization during OTI
with regard to anteroposterior displacement. Use of the Miller
straight blade resulted in significantly less movement than
each of the other 2 blades with regard to axial distraction. The
Cormack-Lehane grade was significantly better with manual inline
stabilization versus cervical collar immobilization; no differences
were observed between blades.