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Table 4 Lumbosacral deformity parameters and sagittal spino-pelvic parameters

From: Sagittal reconstruction of lumbosacral contiguous double-level spondylolytic spondylolisthesis: a comparison of double-level and single-level transforaminal lumbar interbody fusion

 

In total

Double-level TLIF group

Single-level TLIF group

P value (change)

 

Pre-OP

Post-OP

Latest FU

Pre-OP

Post-OP

Latest FU

Change

Pre-OP

Post-OP

Latest FU

Change

Lumbosacral deformity parameters

 L4–S1 height, mm

52.7 ± 12.5

73.4 ± 14.3*

69.2 ± 11.0

50.1 ± 11.4

75.2 ± 13.6*

72.8 ± 10.6

22.7 ± 7.1

55.1 ± 10.5

71.8 ± 9.3*§

66.0 ± 8.2

10.9 ± 4.8

< 0.001

 L4–S1 lordosis, °

26.2 ± 12.9

34.8 ± 14.6*

32.8 ± 15.1

23.6 ± 10.9

38.5 ± 11.3*

35.4 ± 12.1

11.8 ± 9.1

27.5 ± 9.3

31.6 ± 11.4

30.5 ± 14.3

3.0 ± 6.2

< 0.001

 L4-SVA, mm

32.0 ± 13.7

19.7 ± 16.2*

22.8 ± 14.8

33.2 ± 10.4

17.4 ± 12.3*

20.8 ± 13.5

− 12.4 ± 8.2

31.1 ± 12.8

21.7 ± 14.3*

24.6 ± 12.6

− 6.5 ± 6.4

0.007

 LSA, °

106.8 ± 15.5

114.3 ± 17.1*

116.2 ± 16.9

104.2 ± 14.2

116.2 ± 16.3*

118.3 ± 15.5

14.1 ± 11.9

109.1 ± 13.6

112.5 ± 13.8

114.4 ± 12.7

5.3 ± 9.5

0.006

 L4 slope, °

10.1 ± 12.7

5.9 ± 14.2

6.6 ± 9.8

12.2 ± 12.3

7.4 ± 6.1*

8.3 ± 7.4

− 3.9 ± 7.6

8.2 ± 11.4

4.6 ± 12.1

5.1 ± 9.2

− 3.1 ± 5.6

0.680

 L5 slope, °

24.5 ± 14.4

17.6 ± 14.8*

17.7 ± 10.2

27.1 ± 13.3

17.4 ± 12.3*

19.2 ± 8.9

− 8.1 ± 4.2

22.1 ± 9.3

17.8 ± 10.3

16.4 ± 8.1

− 5.6 ± 3.1

0.022

 L5 incidence, °

36.1 ± 15.3

26.9 ± 16.9*

28.0 ± 11.6

39.7 ± 12.2

28.2 ± 14.3*

30.2 ± 9.7

− 9.5 ± 4.4

32.7 ± 11.6

25.7 ± 12.8*

26.1 ± 9.3

− 6.6 ± 3.5

0.013

Sagittal spino-pelvic parameters

 PI, °

63.0 ± 13.4

63.9 ± 14.5

64.1 ± 12.7

66.2 ± 12.6

67.5 ± 13.7

67.3 ± 12.1

1.1 ± 1.3

60.2 ± 11.3

60.8 ± 14.2

61.4 ± 10.1

1.2 ± 1.5

0.792

 PT, °

30.5 ± 11.6

19.0 ± 13.5*

22.1 ± 9.4

31.9 ± 10.4

18.4 ± 12.3*

21.4 ± 8.9

− 9.8 ± 6.7

29.3 ± 10.8

19.6 ± 12.8*

22.8 ± 7.8

− 6.5 ± 6.3

0.074

 SS, °

32.4 ± 11.4

45.3 ± 11.1*

42.5 ± 9.6

34.8 ± 6.8

47.9 ± 10.5*

44.2 ± 8.6

9.4 ± 6.3

31.9 ± 9.4

43.6 ± 8.3*

41.7 ± 7.9

9.8 ± 4.3

0.800

 TK, °

16.5 ± 10.4

27.4 ± 13.2*

24.8 ± 11.8

14.1 ± 8.1

25.2 ± 10.2*

22.3 ± 9.8

8.2 ± 6.4

18.6 ± 8.7

29.4 ± 9.3*

27.1 ± 5.2

8.5 ± 8.7

0.881

 LL, °

54.7 ± 13.1

55.2 ± 17.1

56.4 ± 14.6

52.4 ± 10.6

56.2 ± 14.2

57.6 ± 13.1

5.2 ± 8.1

56.7 ± 12.1

54.3 ± 15.2

55.4 ± 13.7

− 1.3 ± 10.1

0.010

 L4–S1 lordosis/LL, %

46.8 ± 18.3

63.1 ± 16.7*

59.8 ± 23.1

43.7 ± 15.3

68.4 ± 14.2*

65.1 ± 21.3

21.4 ± 10.3

49.7 ± 16.0

58.3 ± 12.4

55.2 ± 16.5

5.5 ± 7.5

< 0.001

 C7-SVA, mm

31.3 ± 34.2

10.6 ± 23.6*§

− 1.7 ± 19.2

37.8 ± 32.2

8.4 ± 21.4*§

− 9.6 ± 17.2

− 47.4 ± 21.9

26.4 ± 22.7

12.6 ± 16.8*

5.4 ± 14.8

− 21.0 ± 18.1

< 0.001

  1. LSA lumbosacral angle, PI pelvic incidence, PT pelvic tilt, SS sacral slope, TK thoracic kyphosis, LL lumbar lordosis, L4–S1 lordosis/LL the ratio of L4–S1 lordosis to LL, SVA sagittal vertical axis, OP operation, FU follow-up, vs for versus. Change = the value of latest FU − the value of pre-OP
  2. *Comparison between preoperation and postoperation
  3. §Comparison between postoperation and latest follow-up
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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X