Table 2.

Force recorded by small-sized load cell (N) at adjacent disc

Small-sized load cell	Anterior lever reduction	Posterior lever reduction	p Value
L3/L4 intervertebral level
Cell No. 1	21.4 ± 4.74	14.78 ± 1.74	<  0.001**
Cell No. 2	0.22 ± 0.21	1.24 ± 0.11	<  0.001**
Cell No. 3	1.3 ± 0.28	3.82 ± 0.71	<  0.001**
Cell No. 4	0.57 ± 0.51	1.69 ± 0.28	<  0.001**
L5/S1 intervertebral level
Cell No. 5	1.34 ± 0.57	0.16 ± 0.12	<  0.001**
Cell No. 6	1.65 ± 0.81	0.23 ± 0.1	<  0.001**
Cell No. 7	5.5 ± 1.62	31.54 ± 2.75	< 0.001**
Cell No. 8	1.58 ± 0.97	0.6 ± 0.13	< 0.001**

Student’s t-test, *p < 0.05, **p < 0.01; Mean values are presented ± SD