Table 3.
Radiological parameters assessed in the study
| Radiological parameters | Preoperative (°) | Immediate postoperative (°) | Final follow-up (°) |
|---|---|---|---|
| CA (range) | 17.1±10.3 (18, 4-31) | 7.06±9.58 (2, 2-21) (P=0.0009, power=0.97)* | 11.3±19.97 (2, 0-21) (P=0.55)** |
| SVA (range) | 70.5±31.8 mm (68, −25-129) | 15.2±18.83 mm (15, −35-39) (P<0.001, power=0.99)* | 15.13±22.07 mm (15, −37-54) (P=0.9)** |
| LL (range) | 24±7 (28, 4-42) | 44.5±8.16 (45, 23-61) (P<0.001, power=0.99)* | 45.3±9.05 (46, 23-61) (P=0.6)** |
| TK (range) | 16.3±8.5 (17, 5-31) | 24.8±8.89 (10, 28-36) (P=0.0009, power=0.96)* | 29.6±8.85 (30, 12-41) (P=0.003)* |
| SS (range) | 27±10.11 (24, 12-46) | 31.6±4.09 (31, 24-42) (P=0.04, power=0.59)* | 29.5±5.37 (28, 21-43) (P=0.15)** |
| PT (range) | 34.1±11.2 (33, 12-54) | 28.7±7.27 (31, 15-40) (P=0.04, power=0.62)* | 30.2±8.2 (30, 14-45) (P=0.15)** |
| PI (range) | 63.6±12.7 (64, 44-82) | 61.7±7.24 (61, 46-80) (P=0.5)** | 62.3±6.67 (62, 49-73) (P=0.72)** |
| Foraminal area (range) | 68±6 mm2 (69, 56-77) | 79±6 mm2 (79, 67-90) (P<0.001, power=0.99) |
P<0.05 was considered significant, *Significant, **No significant relation. Powers of all significant P values were analyzed and if the power is more than 0.8, it is considered to be valuable. The P values of final follow-up indicate changes in comparison to immediate postoperative measurements. The values are expressed as mean±SD (median, range). SD=Standard deviation, PI=Pelvic incidence, PT=Pelvic tilt, SS=Sacral slope, TK=Thoracic kyphosis, LL=Lumbar lordosis, SVA=Sagittal vertical axis, CA=Cobb’s angle