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Table 4 The spino-pelvic parameters of DTLK patients in 4 cluster groups

From: A novel classification on degenerative thoracolumbar kyphosis based on sagittal spino-pelvic alignment: should the thoracolumbar segments be intervened?

 

Type I (n = 81)

Type II (n = 58)

Type III (n = 66)

Type IV (n = 36)

P

M: F

17:64

17:41

19:47

11:25

0.577

Age (y)

66.3 ± 8.0

66.7 ± 13.4

70.6 ± 7.0

62.5 ± 13.0

0.001

BMI (kg/m2)

25.1 ± 3.1

25.2 ± 4.7

25.6 ± 3.4

25.6 ± 5.1

0.834

TLK (°)

19.7 ± 2.5

19.6 ± 2.9

34.6 ± 7.3

36.3 ± 12.3

< 0.001

SVA(mm)

16.4 ± 26.6

80.4 ± 32.0

21.0 ± 21.3

77.3 ± 53.4

< 0.001

SSA (°)

62.7 ± 15.7

72.1 ± 15.1

64.8 ± 13.6

72.5 ± 10.8

0.003

TK (°)

27.0 ± 13.6

22.6 ± 12.1

32.2 ± 13.0

28.3 ± 16.9

0.002

LL (°)

37.2 ± 19.9

23.0 ± 15.0

37.6 ± 15.5

21.5 ± 18.8

< 0.001

PI (°)

45.7 ± 9.9

41.9 ± 11.1

41.3 ± 10.4

48.3 ± 12.7

0.003

PT (°)

19.3 ± 8.4

18.7 ± 9.8

17.4 ± 8.3

27.6 ± 15.8

< 0.001

PI-LL (°)

7.3 ± 12.7

18.9 ± 13.8

3.2 ± 12.0

22.1 ± 20.2

< 0.001

SS (°)

26.4 ± 12.0

23.2 ± 9.5

23.9 ± 10.9

20.7 ± 11.1

0.063

  1. Notefoot: DTLK: degenerative thoracolumbar kyphosis; SVA: sagittal vertical axis; SSA: Spino-sacral angle; TK: thoracic kyphosis; TLK: thoracolumbar kyphosis; LL: lumbar stenosis; PI: pelvic incidence; PT: pelvic tilt; SS: sacral slope