Table 1 The posterior intradiscal pressures under different loading conditions in the unfixed and fixed groups (MPa)

1.83 ± 0.23

1.48 ± 0.25

1.95 ± 0.22

1.31 ± 0.16^†

1.15 ± 0.12*

1.90 ± 0.27

2.88 ± 0.27

1.02 ± 0.17^†

2.66 ± 0.44

0.98 ± 0.18^†

3.07 ± 0.39

1.11 ± 0.20^†

2.51 ± 0.47

0.70 ± 0.14^†

2.39 ± 0.279

0.67 ± 0.15^†

2.31 ± 0.30

0.87 ± 0.10^†

1.94 ± 0.30

0.88 ± 0.20^†

1.69 ± 0.33

0.86 ± 0.14^†

1.87 ± 0.16

1.27 ± 0.23^†

1.87 ± 0.51

1.09 ± 0.20^†

1.67 ± 0.33

1.15 ± 0.20

1.91 ± 0.36

1.10 ± 0.22^†