Table 2.
Measurement of sagittal balance parameters for L4–L5 in degrees
| Average | Minimum value | Maximum value | Standard deviation | P value | |
|---|---|---|---|---|---|
| Global lordosis preoperative | 50.1 | 29 | 69 | 10.1 | 0.72 |
| Global lordosis postoperative | 49.2 | 26 | 70 | 11.8 | |
| L4–L5 lordosis preoperative | 5.9 | 0 | 16 | 4.6 | 0.001 |
| L4–L5 lordosis postoperative | 11.1 | 1 | 16 | 4.4 | |
| L5–S1 lordosis preoperative | 12.0 | 3 | 27 | 7.1 | 0.53 |
| L5–S1 lordosis postoperative | 11.3 | 0 | 24 | 6.5 | |
| ST preoperative | 37.9 | 29 | 44 | 5 | 0.84 |
| ST postoperative | 36.9 | 19 | 46 | 7.9 | |
| PT preoperative | 18.1 | 10 | 26 | 5.3 | 0.49 |
| PT postoperative | 19.5 | 10 | 28 | 6.1 | |
| Kyphosis preoperative | 34.3 | 12 | 58 | 12.7 | 0.39 |
| Kyphosis postoperative | 32.9 | 17 | 55 | 11.5 |