Table 1 Comparison of the parameters between the HDDS and LDDS groups
HDDS group (n = 24) | LDDS group (n = 9) | P value | ||
|---|---|---|---|---|
Sex | Male | 3(12.5%) | 8(89%) | < 0.001* (Fisher’s exact test) |
female | 21(87.5%) | 1(11%) | ||
Age (year) | 13.0 ± 2.2 | 15.6 ± 1.9 | 0.005* | |
Slip percentage (%) | 63.7 ± 25.5 | 26.0 ± 10.5 | < 0.001* | |
Dub-LSA (°) | 61.4 ± 16.0 | 109.4 ± 9.9 | < 0.001* | |
PI (°) | 72.0 ± 12.1 | 57.3 ± 12.2 | 0.004* | |
PT (°) | 39.8 ± 9.9 | 14.8 ± 5.7 | < 0.001* | |
SS (°) | 32.2 ± 14.6 | 43.1 ± 8.5 | 0.044 | |
Pelvic orientation | Unbalanced pelvis | 22(92%) | 1(11%) | < 0.001* (Fisher’s exact test) |
Balanced pelvis | 2(8%) | 8(89%) | ||
LL (°) | 57.7 ± 24.1 | 56.0 ± 11.5 | 0.787 | |
TK (°) | 5.4 ± 21.3 | 32.1 ± 9.6 | < 0.001* | |
CL (°) | − 8.5 ± 16.1 | 10.5 ± 11.8 | 0.003* | |
Patients with cervical kyphosis | 17(70.8%) | 2(22.2%) | 0.019* (Fisher’s exact test) | |
SVA (mm) | 56.5 ± 35.1 | 36.2 ± 38.9 | 0.161 | |
Patients with sagittal imbalance (SVA> 5 cm) | 10(41.6%) | 1(11.1%) | 0.205 | |