Skip to main content

Table 1 Preoperative comparison between MSB and MSI group

From: Incidence and risk factors of postoperative medial shoulder imbalance in Lenke Type 2 adolescent idiopathic scoliosis with lateral shoulder balance

Variables

MSB group(n = 37)

MSI group(n = 83)

P

Age(years-old)

14.92 ± 2.06

15.13 ± 2.08

0.695

Sex(man/woman)

9/28

23/60

0.698

Risser Sign

3.49 ± 1.56

3.45 ± 1.44

0.705

RSH(mm)

-8.93 ± 12.49

-7.36 ± 12.21

0.625

T1 tilt(°)

1.57 ± 8.21

7.68 ± 6.36

< 0.001

CA(°)

2.13 ± 4.71

3.81 ± 4.44

0.131

UIVt(°)

0.87 ± 10.34

6.38 ± 7.69

0.019

PTC(°)

38.86 ± 6.31

43.51 ± 7.89

0.002

MTC(°)

61.10 ± 10.06

59.48 ± 9.92

0.413

PTC/MTC

0.65 ± 0.15

0.75 ± 0.17

0.005

TLC(°)

31.79 ± 8.76

29.34 ± 8.39

0.149

C7PL-SCVL(mm)

-3.92 ± 10.52

1.19 ± 15.89

0.225

PTC-AVT (mm)

4.67 ± 6.94

7.67 ± 7.25

0.061

MTC-AVT(mm)

44.93 ± 18.45

42.12 ± 16.97

0.416

PTC-bending(°)

29.58 ± 6.98

34.15 ± 7.00

< 0.001

MTC-bending(°)

41.45 ± 13.06

39.49 ± 11.73

0.416

TLC-bending(°)

9.06 ± 6.07

6.42 ± 8.18

0.081

Flexibility of PTC(%)

23.38 ± 9.32

21.02 ± 10.11

0.150

Flexibility of MTC(%)

33.14 ± 14.84

35.10 ± 15.57

0.416

Flexibility of TLC(%)

71.73 ± 17.89

80.37 ± 28.96

0.160

T1-VR

0.31 ± 0.23

0.36 ± 0.25

0.458

T2-VR

0.45 ± 0.27

0.58 ± 0.27

0.003

PTCA-VR

0.58 ± 0.24

0.75 ± 0.18

< 0.001

  1. RSH: Radiographic shoulder balance; CA: Cervical axis; UIVt: upper instrumented vertebra tilt; PTC: proximal thoracic curves; MTC: main thoracic curves; PTC/MTC: the ratio of PTC and MTC; TLC: thoracolumbar/lumbar curve; C7PL-SCVL: The distance from the C7 plumb line to the midline of the sacrum; PTC-AVT: the horizontal distance between the C7 plumb line and the proximal thoracic apical vertebra. MTC-AVT: MTC-AVT: the horizontal distance between the C7 plumb line and the main thoracic apical vertebra. T1-VR: vertebra rotation ratio of T1; T2-VR: vertebra rotation ratio of T2; PTCA-VR: vertebra rotation ratio of the proximal thoracic apical vertebra