Table 3.
Average and standard deviation values of the predicted results for the different overall degrees of disc degeneration
| Output parameter | Degree 0 | Degree 1 | Degree 2 | Degree 3 |
|---|---|---|---|---|
| Axial displacement (mm) | 1.51 ± 0.09*(1) | 1.26 ± 0.12*(2) | 0.82 ± 0.21 | 0.64 ± 0.14*(0) |
| Facet force (N) | 12.60 ± 1.52 | 10.41 ± 3.90*(2) | 3.12 ± 3.78 | 2.50 ± 2.28*(0) |
| Pressure end day (MPa) | 0.26 ± 0.001*(1) | 0.28 ± 0.02 | 0.34 ± 0.08 | 0.40 ± 0.07*(0) |
| Pressure end night (MPa) | 0.23 ± 0.004 | 0.23 ± 0.006 | 0.22 ± 0.02 | 0.22 ± 0.03 |
| Axial effective stress (MPa) | 0.13 ± 0.05 | 0.10 ± 0.10 | 0.14 ± 0.24*(3) | 0.25 ± 0.29*(0) |
| Fluid loss (%) | 22.91 ± 2.23 | 21.46 ± 7.08 | 20.10 ± 9.83 | 14.67 ± 8.00 |
| Flexion RoM (°) | 5.59 ± 0.54 | 5.10 ± 0.98*(2) | 3.50 ± 0.93 | 3.37 ± 0.71*(0) |
| Extension RoM (°) | 5.44 ± 0.65 | 5.09 ± 1.05*(2) | 3.75 ± 1.25 | 3.57 ± 0.91*(0) |
| Flexion RoMevening/RoMmorning (−) | 1.13 ± 0.05 | 1.15 ± 0.04*(2) | 1.11 ± 0.03 | 1.09 ± 0.04*(0) |
| Extension RoMevening/RoMmorning (−) | 1.05 ± 0.02 | 1.02 ± 0.06 | 0.98 ± 0.07 | 0.98 ± 0.05*(0) |
*(n) Significantly different from degree n