Assessing spinal movement during four extrication methods: a biomechanical study using healthy volunteers

Table 2 Maximal movement and travel

	Maximal movement during extrication							Travel (total movement) during extrication
	Roof off	B post	p value	Rapid	p value	Self	p value	Roof off	B post	p value	Rapid	p valve	Self	p value
Lumbar A/P[mm]	9.65	10.73	0.45	12.47	0.09	4.47	< 0.001	26.56	30.25	0.28	36.07	0.02	8.49	< 0.001
Lumbar Lat [mm]	8.63	10.79	0.27	11.62	0.13	5.67	0.03	21.80	30.70	0.06	37.67	0.008	10.69	< 0.001
Cervical A/P [mm]	5.23	5.86	< 0.001	6.21	< 0.001	2.61	< 0.001	16.69	17.72	0.65	20.51	0.13	4.97	< 0.001
Cervical Lat [mm]	5.11	6.88	0.05	5.60	0.59	2.38	< 0.001	14.56	19.02	0.09	17.68	0.28	4.46	< 0.001
Lumbar roll [°]	18.83	23.47	0.31	25.46	0.14	11.25	0.01	47.59	66.83	0.10	82.49	0.02	21.09	< 0.001
Lumbar pitch [°]	22.91	22.55	0.94	22.33	0.89	8.20	< 0.001	61.63	65.59	0.74	75.97	0.38	15.63	< 0.001
Lumbar yaw [°]	29.80	42.59	0.14	31.65	0.78	11.23	< 0.001	74.73	109.69	0.12	101.09	0.27	21.13	< 0.001
Cervical roll [°]	15.55	20.54	0.08	16.62	0.68	7.07	< 0.001	44.52	55.79	0.16	53.92	0.28	13.31	< 0.001
Cervical pitch [°]	14.90	16.29	0.48	17.55	0.21	7.34	< 0.001	47.32	48.67	0.82	56.51	0.15	13.99	< 0.001
Cervical yaw [°]	20.45	26.60	.098	22.98	0.53	6.10	< 0.001	52.46	69.31	0.07	64.41	0.25	12.14	< 0.001

ISSN: 1757-7241