Table 4.
Comparison of sagittal alignment parameters among three groups classified by modified method
| Lordotic | Straight/Sigmoid | Kyphotic | P value | Sig | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | 37 | 55 | 19 | |||||||
| Mean | SD | Mean | SD | Mean | SD | |||||
| C7 Slope (°) | 26.91 | 5.4 | 17.91 | 8.84 | 15.24 | 7.43 | 0.000 | * | ** | |
| C2-C7 Cobb (°) | -18.26 | 10.94 | -4.81 | 7.64 | 4.39 | 8.47 | 0.000 | * | ** | *** |
| C2-S1 SVA (mm) | 19.63 | 35.43 | 12.51 | 28.19 | 15.12 | 37.37 | 0.587 | |||
| C7-S1 SVA (mm) | 9.72 | 31.3 | -1.49 | 23.72 | -4.1 | 37.29 | 0.124 | |||
| C2-7PL (mm) | 9.91 | 13.11 | 14 | 11.01 | 19.23 | 7.53 | 0.015 | ** | ||
| T5-T12 Cobb (°) | 25.75 | 9.11 | 22.22 | 9.92 | 22.52 | 8.89 | 0.198 | |||
| T10-L2 Cobb (°) | 4.19 | 7.36 | 2.63 | 6.43 | 2.08 | 8.98 | 0.488 | |||
| L1-S1 Cobb (°) | 50.61 | 12.12 | 49.34 | 10.68 | 48.13 | 12.75 | 0.733 | |||
| PI (°) | 48.88 | 10.98 | 45.24 | 10.97 | 44.38 | 10.36 | 0.207 | |||
| PT (°) | 12.62 | 6.53 | 8.71 | 7.55 | 12.24 | 5.36 | 0.018 | * | ||
| SS (°) | 36.82 | 8.58 | 36.28 | 7.99 | 32.72 | 11.37 | 0.232 | |||
“*”: Lordosis group vs Straight/Sigmoid group, P < 0.05
“**”: Lordosis group vs Kyphotic group, P < 0.05
“***”: Straight/Sigmoid group vs Kyphotic group, P < 0.05