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Table 3 Radiographical outcome of the study population stratified by lumbar interbody fusion types

From: Comparison of radiographic and clinical outcomes between ALIF, OLIF, and TLIF over 2-year follow-up: a comparative study

Characteristic

Overall (n = 348)

Group

p value

ALIF (n = 69)

OLIF (n = 101)

TLIF (n = 178)

PT

Pre-OP

20.6 ± 7.1

20.8 ± 6.8

19.8 ± 8.2

21.1 ± 6.5

0.37

(19.9–21.4)

(19.1–22.4)

(18.2–21.4)

(20.1–22)

6 M

17 ± 4.5

16.9 ± 6.1

17.1 ± 3.6

17.1 ± 4.3

0.94

(16.5–17.5)

(15.3–18.4)

(16.4–17.8)

(16.4–17.7)

2 Y

16.5 ± 6.5

16.9 ± 8.1

16.9 ± 7.3

16.2 ± 5.2

0.66

(15.8–17.2)

(14.9–18.8)

(15.4–18.3)

(15.4–17)

p value (2 Y-pre)

 < 0.01**

 < 0.01**

 < 0.01**

 < 0.01**

SS

Pre-OP

32.9 ± 10.6

31.9 ± 13.1

34 ± 10.2

32.6 ± 9.8

0.38

(31.7–34)

(28.7–35)

(32–36)

(31.1–34)

6 M

34.7 ± 4.2

35.2 ± 6

34.5 ± 3.6

34.5 ± 3.6

0.53

(34.2–35.1)

(33.7–36.7)

(33.8–35.3)

(34–35.1)

2 Y

34.7 ± 6.8

37.2 ± 10.7

34.8 ± 6.5

33.7 ± 4.5

 < 0.01**

(34–35.4)

(34.6–39.7)

(33.5–36.1)

(33–34.4)

p value (2 Y-pre)

 < 0.01**

 < 0.01**

0.48

0.18

PI

Pre-OP

53.5 ± 9

52.6 ± 11.5

53.7 ± 9

53.6 ± 7.9

0.66

(52.5–54.4)

(49.8–55.3)

(52–55.5)

(52.5–54.8)

6 M

53.9 ± 7

52.7 ± 8.4

53.7 ± 8.2

53.9 ± 5.2

0.57

(52.1–53.6)

(51.6–55.8)

(52.3–55.6)

(52–53.7)

2 Y

52.2 ± 7.6

53.8 ± 12

52.7 ± 8.2

52.0 ± 4

0.14

(51.4–53)

(51–56.7)

(51–54.3)

(49.3–53.5)

p value (2 Y-pre)

0.45

0.18

0.1

0.24

 

LL

Pre-OP

41 ± 11.3

39.2 ± 10.5

42.8 ± 12.3

40.7 ± 11

0.11

(39.8–42.2)

(36.7–41.8)

(40.4–45.2)

(39–42.3)

6 M

44.9 ± 8

45.6 ± 5.3

46 ± 3.1

44.1 ± 10.5

0.12

(44.1–45.8)

(44.3–46.8)

(45.4–46.6)

(42.5–45.6)

2 Y

42.8 ± 10.5

45 ± 17.4

44.9 ± 7.9

40.8 ± 7.5

0.01*

(41.7–43.9)

(40.8–49.2)

(43.3–46.5)

(39.6–41.9)

p value (2 Y-pre)

0.04*

 < 0.01**

0.04*

0.42

 

SL

Pre-OP

17.2 ± 5.5

17.6 ± 5.1

16.2 ± 5.7

17.4 ± 5.6

0.37

(16.6–17.8)

(16.4–18.8)

(15.1–17.3)

(16.6–18.2)

6 M

20.5 ± 6.4

21.7 ± 6.4

20.6 ± 6

20.3 ± 7.4

0.07

(19.8–21.2)

(20.2–23.2)

(19.4–21.8)

(19.2–21.4)

2 Y

19.4 ± 8.5

21.4 ± 9.2

19.3 ± 7.1

19.1 ± 8.4

0.05*

(18.5–20.3)

(19.9–23.6)

(17.9–20.7)

(17.7–20.5)

p value (2 Y-pre)

0.04*

0.03*

0.03*

0.05*

 

SVA

Pre-OP

56.1 ± 30.7

55.5 ± 25.9

61.8 ± 37

51.2 ± 26.6

0.2

(51–61.2)

(46.7–64.4)

(51.4–72.3)

(44.1–58.4)

6 M

45.7 ± 14.7

47.6 ± 9.7

49.4 ± 8.9

43.4 ± 17.4

0.02*

(43.9–47.5)

(44.5–50.6)

(47.3–51.5)

(40.6–56.2)

2 Y

45 ± 42.6

45 ± 39.5

45.8 ± 43.6

54.5 ± 56.2

0.05*

(42–48)

(41.3–49.8)

(40.2–51.4)

(46–63)

p value (2 Y-pre)

0.03*

0.04*

0.03*

0.09

 

PI-LL

Pre-OP

14.6 ± 11.4

14.2 ± 10.6

13.3 ± 11.2

15.4 ± 11.8

0.33

(13.4–15.8)

(11.6–16.7)

(11.1–15.5)

(13.7–17.2)

6 M

7.5 ± 5.2

9.2 ± 5.5

7.8 ± 4

7.2 ± 5.6

0.04*

(6.9–8)

(7.9–10.6)

(7–8.6)

(6.3–8)

2 Y

11.9 ± 7.2

11.8 ± 8.5

10 ± 7.3

11.6 ± 6.3

0.04*

(11.1–12.6)

(9.7–13.8)

(8.5–11.4)

(10.7–12.5)

p value (2 Y-pre)

0.04*

0.03*

0.04*

0.06

 
  1. p value < 0.05 was consider statistically significant. Values expressed as the mean ± standard deviation and 95 confidence interval range in the brackets. p < 0.05*, p < 0.01**
  2. ALIF Anterior lumbar interbody fusion, OLIF Oblique lumbar interbody fusion, TLIF Transforaminal lumbar interbody fusion, PT Pelvic tilt, SS Sacral slope, PI Pelvic incidence, LL Lumbar lordosis, SL Segmental lordosis, SVA Sagittal vertical axis, PI-LL PI minus LL mismatch, M Month, Y Year
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X