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Table 3 Comparison between Preoperative and postoperative radiographic data

From: Clinical and radiographic outcomes of oblique lumbar interbody fusion with anterolateral screw and rod instrumentation in osteopenia patients: a retrospective study

 

Preop

Postop 3d

Final Follow-up

Final FU-Preop

P value

Cohen’s d

    

Value

95%CI

  

Group A

 

DH(mm)

8.54 ± 2.48

12.26 ± 2.66

11.11 ± 2.63

0.602 2.58 ± 0.602

2.19 × 10− 5

-1.005

CSH(mm)

14.57 ± 2.85

--

17.64 ± 3.25

0.829 3.07 ± 0.829

2.38 × 10− 5

-1.004

CSA(mm2)

74.20 ± 37.54

--

104.05 ± 33.11

7.246 29.85 ± 23.67

0.0003

-0.843

LL (°)

21.83 ± 14.82

32.10 ± 11.14

30.49 ± 10.90

3.099 8.66 ± 3.099

0.004

0.666

PT (°)

21.49 ± 11.09

22.44 ± 10.57

22.27 ± 10.99

3.883 0.78 ± 3.883

0.753

-0.071

PI (°)

50.37 ± 9.15

53.07 ± 9.78

52.59 ± 10.76

3.614 2.22 ± 3.614

0.323

-0.222

SS (°)

29.17 ± 10.05

31.02 ± 9.36

30.29 ± 10.82

3.861 1.12 ± 3.861

0.632

-0.107

Group B

 

DH(mm)

8.60 ± 2.29

12.10 ± 2.14

11.23 ± 1.88

0.674 2.63 ± 0.674

4.48 × 10− 9

-1.256

CSH(mm)

14.76 ± 2.18

--

18.01 ± 2.46

0.774 3.26 ± 0.774

1.35 × 10− 10

-1.399

CSA(mm2)

59.31 ± 34.82

--

84.77 ± 36.12

6.585 25.46 ± 6.585

3.99 × 10− 4

-0.718

LL (°)

22.62 ± 14.73

34.38 ± 12.68

31.92 ± 12.39

3.599 9.30 ± 3.599

1.756 × 10− 16

-0.684

PT (°)

20.49 ± 10.44

21.23 ± 9.81

21.02 ± 12.11

3.631 0.53 ± 3.631

0.812

-0.047

PI (°)

49.75 ± 8.57

50.91 ± 9.63

51.21 ± 9.10

2.942 1.45 ± 2.942

0.404

-0.164

SS (°)

29.26 ± 12.14

29.68 ± 10.51

30.19 ± 11.89

4.150 0.92 ± 4.150

0.696

-0.077

  1. *means it was statistically different from the preoperative
  2. DH = disc height; CSH = cross-sectional height of the intervertebral foramina; CSA = cross-sectional area of the dural sac;
  3. LL = lumbar lordosis; PT = pelvic tilt; PI = pelvic incidence; SS = sacrum slop