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Table 4 Radiographic measurement

From: Long-term impact of sagittal malalignment on hardware after posterior fixation of the thoracolumbar spine: a retrospective study

 Revision cohortControl cohortp-values*P-values
Wald test
LL (°) mean ± SD34.6 ± 20.343.4 ± 14.30.150.366
SS (°) mean ± SD34.4 ± 10.230.8 ± 9.50.220.162
PT (°) mean ± SD33.3 ± 9.623.5 ± 7.60.0010.005
PI (°) mean ± SD67.7 ± 14.754.7 ± 12.40.0020.006
SVA (mm) mean ± SD112.2 ± 64.867.1 ± 32.60.020.037
TK (°)mean ± SD26.4 ± 16.730.6 ± 14.70.600.621
LG (°) mean ± SD33.9 ± 19.511 ± 9.70.0010.004
FOA Median / IQ range8 ± 126 ± 60.70.357
  1. *The mean values of PI, PT, SVA, and LG were significantly lower in controls than in the revision cohort (independent sample t-test). A multivariate binary logistic regression analysis (Wald test) showed significant differences in PT, PI, SVA, and LG between the revision cohort and controls