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Table 1 Comparison of spinal-pelvic sagittal parameters in sitting versus standing position

From: Differences in standing and sitting spinopelvic sagittal alignment for patients with posterior lumbar fusion: important considerations for the changes of unfused adjacent segments lordosis

Parameters Floating fusion group Lumbosacral fusion group
Standing Erect sitting Natural sitting P (ANOVA) Standing Erect sitting Natural sitting P (ANOVA)
PI (°) 49.4 ± 9.0a 50.4 ± 9.3a 49.5 ± 8.7a 0.905 47.3 ± 9.1a 48.3 ± 10.0a 49.4 ± 10.7a 0.648
PT (°) 15.8 ± 6.5a 20.4 ± 8.8a 25.6 ± 10.5b 0.001 16.0 ± 6.0a 19.9 ± 10.1a 26.2 ± 10.0b < 0.001
SS (°) 33.6 ± 9.0a 30.0 ± 7.8a 23.9 ± 8.1b 0.001 31.1 ± 6.7a 28.2 ± 9.0a 23.0 ± 9.0b < 0.001
LL (°) 45.9 ± 10.4a 38.5 ± 10.8b 31.5 ± 11.9c < 0.001 41.8 ± 10.9a 35.1 ± 13.2b 29.0 ± 13.1c < 0.001
TK (°) 32.7 ± 10.8a 31.1 ± 12.7a 35.2 ± 11.5a 0.468 30.2 ± 10.6a 28.4 ± 11.6a 33.2 ± 11.1a 0.160
URL (°) 8.8 ± 6.9a 4.6 ± 6.7a 1.0 ± 8.0b 0.002 13.3 ± 10.7a 4.6 ± 10.6b − 0.5 ± 9.1c < 0.001
LRL (°) 14.1 ± 5.8a 11.7 ± 6.4a 8.0 ± 5.4b 0.002  
TPA (°) 11.4 ± 7.2a 18.0 ± 7.8b 24.6 ± 9.4c < 0.001 12.4 ± 4.9a 17.6 ± 8.9b 25.1 ± 8.9c < 0.001
  1. ANOVA indicates analysis of variance
  2. a, b, crepresented the same significance subset with post hoc comparisons