| Item | Observational data |
| Operation time (min) | 212 - 470 (326) |
| Intraoperative blood loss (mL) | 1200 - 6000 (2,089) |
| Osteotomy plane | T4-L2 |
| Number of resected vertebra (n) |
|
| Single vertebra | 57 |
| Two segments | 20 |
| Follow-up (mon) | 20 - 35 (28.0) |
| Correction angle of kyphosis (˚) | 10 - 90 (41.6) |
| Correction of trunk shift (˚) | 12 - 23 (5.2) |
| Improvement rate of Visual Analog Scale | 83% |
| Improvement rate of Japanese Orthopaedic Association score | 82% |
| Oswestry disability index score | 19.13 ± 67 |
| SF-36 score | 337.69 ± 86.17 |
| Complications |
|
| Nervous system in 5 cases (6%) | Hematoma compression in 1 case, Inadequate decompression in 1 case, displacement of osteotomy site in 2 cases, and nerve root irritation in 1 case |
| Non-nervous system in 5 cases (6%) | Pleural effusion in 3 cases, wound infection in 1 case, lose of orthopedic angle in 1 case |