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Table 1 Preoperative, postoperative, and final follow-up measurement data

From: Posterior-only surgical correction with heavy halo-femoral traction for the treatment of rigid congenital scoliosis associated with split cord malformation

Case

Age (years)

Location of the major curve

AV

Period of follow up (months)

CS classification

SCM classification

Duration of surgery (min)

Blood loss (ml)

Pre-OP coronal Cobb (°)

Bending Cobb (°)

Flexibility (%)

After traction Cobb (°)

†Post-OP Cobb (°)

Post-OP correction rate (%)

‡Final follow-up Cobb (°)

Final follow-up correction rate (%)

1

11

L

L1/2

36

Mixed

Type 2

240

640

62

45.6

26.45

38.2

21.4

65.48

22.4

63.87

2

14

TL

L1

18

Mixed

Type 1

290

950

77

70

9.09

58

35

54.55

38.5

50

3

22

L

L2/L3

12

failure of formation

Type 2

365

1050

82.8

73.2

11.59

61.4

28.3

65.82

30.2

63.53

4

18

T

T10

12

failure of segmentation

Type 2

350

1600

81.2

70.3

13.42

64.2

25.5

68.6

32.9

59.48

5

24

T

T8

36

failure of segmentation

Type 1

380

2050

113

98

13.27

87.5

56.2

50.27

57.1

49.47

6

22

T

T7

36

failure of segmentation

Type 1

360

1960

94

88.5

5.85

62

48.7

48.19

49.9

46.91

7

10

L

L3

24

failure of formation

Type 2

269

750

60

44.5

25.83

35.6

19.1

68.17

19.5

67.5

8

17

T

T9

12

failure of segmentation

Type 1

365

1350

86

80

6.98

66.7

41

52.33

44.6

48.14

9

16

T

T6

18

failure of segmentation

Type 1

375

2080

91

82

9.89

63

45

50.55

47.8

47.47

10

15

TL

T12

24

Mixed

Type 2

290

820

67

47.8

28.66

40

20.5

69.4

23.6

64.78

11

11

L

L2

18

failure of segmentation

Type 1

350

1405

84.4

75.6

10.43

65.1

34.2

59.48

36.7

56.52

12

23

T

T7

18

failure of segmentation

Type 1

370

2100

105

91.4

12.95

76.3

49.8

52.57

53.2

49.33

13

18

T

T6

12

Mixed

Type 1

360

1865

89

82.5

7.3

64

42.8

51.91

44.2

50.34

14

10

L

L2

24

failure of segmentation

Type 2

250

790

69

51.6

25.22

38.3

22.4

67.54

24.8

64.06

15

13

T

T11

18

failure of formation

Type 1

310

998

74

66

10.81

55.2

29

60.81

31.7

57.16

16

17

T

T9

12

failure of segmentation

Type 1

340

1130

85

76

10.59

64

42

50.59

43.8

48.47

17

16

T

T8

18

failure of segmentation

Type 1

370

2020

96

85

11.46

69.4

47.3

50.73

49.4

48.54

18

15

L

L1/2

24

Mixed

Type 2

315

710

71

58.8

17.18

46.8

22.5

68.31

25.4

64.23

19

11

TL

T12/L1

24

failure of segmentation

Type 1

260

690

65

50.8

21.85

41.9

22.2

65.85

24.3

62.62

20

18

L

L2

12

failure of segmentation

Type 1

331

1780

87.3

74.2

15.01

65.3

34.2

60.82

36.8

57.85

21

24

L

L3

36

Mixed

Type 2

270

815

64

45.8

28.44

36.7

20.3

68.28

23.9

62.66

22

22

L

L2

12

failure of formation

Type 1

350

1797

78.4

66.5

15.18

55.9

24.1

69.26

26.5

66.2

23

12

TL

T12

24

Mixed

Type 2

360

1020

75.6

65.2

13.76

56.1

24.4

67.72

26.2

65.34

24

14

T

T10/T11

18

failure of segmentation

Type 2

330

910

71.4

64.5

9.66

53.8

25

64.99

27.4

61.62

  1. Note: AV apical vertebrae, CS congenital scoliosis, SCM split cord malformation, T thoracic, TL thoracolumbar, L lumbar. The postoperative and preoperative data as well as the final follow-up and preoperative data were analyzed using paired t tests. P < 0.05 implies statistically significant difference. † P < 0.05 (postoperative vs. preoperative); ‡ P < 0.05 (final follow-up vs. preoperative)