Table 3 Comparison of postoperative radiographic parameters and their changes between two groups.

From: Orientation of L4 coronal tilt relative to C7 plumb line as a predictor for postoperative coronal imbalance in patients with degenerative lumbar scoliosis

 

Consistency pattern

Opposition pattern

P value

Patient no

37

40

 

Postoperative GCM (mm)

20.0 ± 13.1

14.0 ± 10.0

0.028*

Postoperative major Cobb angle (°)

8.6 ± 7.3

7.4 ± 5.2

0.392*

Postoperative L4 coronal tilt (°)

5.5 ± 4.9

5.0 ± 4.2

0.582*

Postoperative L5 coronal tilt (°)

4.8 ± 4.2

3.9 ± 3.4

0.274*

Δ GCM (mm)

1.1 ± 20.5

13.5 ± 22.2

0.013*

Δ major Cobb angle (°)

14.5 ± 9.8

17.6 ± 11.7

0.217*

Δ L4 coronal tilt (°)

8.5 ± 7.2

6.2 ± 6.0

0.123*

Δ L5 coronal tilt (°)

4.5 ± 6.7

3.5 ± 4.4

0.470*

Incidence of coronal imbalance

51.4% (19/37)

15% (6/40)

0.001#

  1. Boldface indicates statistical significance; GCM: global coronal malalignment.
  2. *Independent t test.
  3. #Chi square test.
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