Table 2 Clinical and radiographic characteristics of the patients
SSM ( N = 64) | 3-COS ( N = 48) | |
|---|---|---|
Fused levels | 9.1 ± 6.3 | 11.6 ± 4.2* |
Fusion to sacrum | 49 (76.6%) | 38 (79.2%) |
More than twice of spine surgeries before | 24 (37.5%) | 39 (81.3%)* |
Preoperative SVA (mm) | 55.2 ± 48.9 | 98.3 ± 80.9* |
Preoperative LL (°) | 31.5 ± 22.3 | 27.3 ± 25.1 |
Preoperative PI (°) | 53.4 ± 11.3 | 58.7 ± 10.9* |
Preoperative PT (°) | 23.6 ± 10.7 | 28.1 ± 12.6* |
Preoperative SS (°) | 27.9 ± 10.5 | 29.3 ± 11.9 |
Preoperative PI minus LL (°) | 21.8 ± 21.1 | 30.7 ± 20.8* |