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Table 2 Comparisons of the sagittal spinal–pelvic alignment parameters and LBP

From: Sagittal spinal-pelvic alignment in patients with Crowe type IV developmental dysplasia of the hip

  Control (n = 49) Crow IV DDH
Total (n = 49) Unilateral (n = 39) Bilateral (n = 10)
SS(°) 40.4 ± 6.7 47.5 ± 7.5* 45.7 ± 7.2* 54.3 ± 2.8*
LL(°) -53.3 ± 11.5 −63.7 ± 9.2* −61.3 ± 8.8* −72.9 ± 3.0*
SSA(°) 130.6 ± 7.9 141.8 ± 7.2* 139.7 ± 6.3* 150.2 ± 3.6*
C7T(°) 91.1 ± 3.7 93.9 ± 3.6* 93.3 ± 3.6* 96.3 ± 2.3*
SVA (mm) 6.4 (−52–47) −16 (−95–45) * −11.1(− 70–44.5) * −32.6(−95–0) *
Number of patients with LBP   31 (63.2%) 24 (61.5%) 7 (70%)
Spine VAS scores of patients with LBP    5.3 ± 1.6 5.8 ± 1.7
  1. Comparisons between Crow IV DDH patients and controls (independent sample t test). * p < 0.05
  2. Comparisons between unilateral and bilateral Crowe IV DDH group. (independent sample t test).p < 0.05
  3. There were no differences in prevalence (p = 0.13) or low back pain intensity based on VAS (p = 0.48) between patients with low back pain in unilateral and bilateral Crowe IV DDH group
  4. DDH developmental dysplasia of the hip, LBP low back pain, VAS visual analogue scale