Measures | Single-segment group | Double-segment group | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Preoperative | Postoperative | Preoperative | Postoperative | |||||||
1 month | 3 months | 12 months | Final follow-up | 1 month | 3 months | 12 months | Final follow-up | |||
PI(°) | 48.5 | - | - | - | - | 37.2# | - | - | - | - |
Cobb angle (°) | 15.3 ± 2.8 | 8.5 ± 2.9* | 5.7 ± 2.5* | 3.1 ± 1.0* | 2.4 ± 0.6* | 15.7 ± 4.6 | 7.9 ± 3.3* | 6.0 ± 2.5* | 2.7 ± 1.5* | 2.2 ± 1.0* |
AVT(mm) | 25.6 ± 15.1 | 8.9 ± 2.9* | 5.8 ± 3.4* | 5.4 ± 2.7* | 1.9 ± 0.4* | 28.9 ± 13.4 | 9.7 ± 3.2* | 6.1 ± 2.5* | 5.5 ± 1.9* | 5.2 ± 2.3*# |
CBD(mm) | 19.0 ± 3.1 | 8.1 ± 3.3* | 5.3 ± 3.2* | 1.4 ± 2.1* | 1.1 ± 1.6* | 20.3 ± 2.7 | 8.5 ± 3.0* | 5.4 ± 3.8* | 5.2 ± 1.8*# | 5.1 ± 1.0*# |
SVA(mm) | 50.1 ± 21.8 | 22.8 ± 12.4* | 17.1 ± 9.4* | 6.0 ± 3.3* | 3.9 ± 2.1* | 49.7 + 18.2 | 21.9 ± 13.0* | 16.4 ± 10.3* | 13.6 ± 3.4*# | 12.2 ± 3.0*# |
TK(°) | 12.8 ± 8.2 | 13.8 ± 7.6 | 16.1 ± 7.9 | 25.3 ± 9.1* | 30.1 ± 13.4* | 11.9 ± 7.1 | 12.3 ± 8.4 | 15.5 ± 7.2 | 26.0 ± 8.6* | 31.2 ± 8.0* |
LL(°) | 35.9 ± 8.6 | 37.2 ± 7.9 | 41.3 ± 10.1* | 49.6 ± 8.7* | 51.9 ± 10.5* | 36.8 ± 8.4 | 38.4 ± 8.0 | 40.5 ± 9.6 | 50.6 ± 9.4* | 53.2 ± 9.4* |
RR(%) | - | 50.9 | 75.5 | 92.5 | 94.3 | - | 47.6 | 71.4 | 90.5 | 95.2 |