Biomechanical study 4: Nutbeam, T. Fenwick R, May B, Stassen W, Smith JE, Bowdler J, Wallis L, Shippen J.
Extrication studied: Chain cabling v’s roof off
Chain cabling involves attaching anchored chains or strops to the front and rear posts of the damaged vehicle and using a winch to apply traction to the vehicle, therefore reversing the forces and vehicle distortion associated with a frontal collision.
What we found:
Cervical AP Maximal movement
* Error bars indicate 95% confidence intervals
Chain cabling extrication compared to other extrication types
Error bars indicate 95% Confidence Intervals
What we learnt:
The movement associated with chain cabling extrication was similar to that previously collected for other extrication types.
Section 3: Summary
– Self-extrication is associated with smaller movements at the cervical and lumbar spine than other extrication types.
– Extrication types that are not self-extrication appear to be similar in movement generation at the cervical and lumbar spine.
– There is a disconnect between the extrication techniques that are considered to reduce movement and their performance in this regard.