. 2008 Dec 10;18(4):465–470. doi: 10.1007/s00586-008-0842-3

Table 1.

Relationships among biomechanical parameters and radiologic results

	Flexion stiffness (N/mm)	Extension stiffness (N/mm)	Absorption energy (J)	Neutral zone (mm/N)
Range of motion
r²	0.021	0.065	0.240	0.000
P value	0.336	0.087	<0.001	0.988
Disc height^a
r²	0.105	0.021	0.003	0.000
P value	<0.05	0.340	0.741	0.977

^aDisc height was calculated as the mean value of anterior and posterior disc height divided by the anteroposterior width of upper vertebra