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Table 4 Comparison of preoperative and postoperative clinical outcomes based on postoperative T1S-CL

From: Does T1 slope minus cervical lordosis mismatch affect surgical outcomes of cervical laminoplasty in the absence of preoperative severe kyphosis?

  

Mismatch group (N = 21)

Match group (N = 79)

P value

Age, y, mean ± SD

 

70.7 ± 7.18

65.9 ± 10.6

0.55

Follow up period, mo, mean ± SD

 

27.1 ± 19.9

32.5 ± 21.3

0.23

Sex ( male/female), n

 

16/5

51/28

0.32

C2-C7 angle (degrees)

Preop

8.52 ± 7.92

17.8 ± 11.8

 < 0.01

Postop

‐0.12 ± 11.2

18.8 ± 11.1

 < 0.01

T1 slope angle (degrees)

Preop

26.1 ± 8.99

24.4 ± 8.15

0.45

Postop

29.6 ± 10.9

25.3 ± 8.67

0.11

T1S-C27 angle (degrees)

Preop

17.6 ± 8.27

6.63 ± 8.45

 < 0.01

Postop

29.7 ± 8.21

6.49 ± 7.76

 < 0.01

C2-C7SVA (mm)

Preop

32.7 ± 13.4

22.9 ± 13.5

 < 0.01

Postop

45.6 ± 17.5

23.4 ± 13.7

 < 0.01

NRS (Neck pain)

Preop

3.62 ± 3.04

3.20 ± 3.12

0.59

Postop

3.29 ± 2.83

2.53 ± 2.56

0.25

PCS

Preop

20.4 ± 18.4

26.1 ± 17.9

0.21

Postop

34.5 ± 10.9

33.7 ± 19.5

0.86

NDI

Preop

40.4 ± 20.9

36.8 ± 16.5

0.41

Postop

33.0 ± 15.8

24.8 ± 15.6

0.04

EQ5D

Preop

0.49 ± 0.22

0.59 ± 0.19

0.04

Postop

0.61 ± 0.14

0.71 ± 0.19

0.02

JOA score

Preop

9.95 ± 2.89

10.9 ± 2.03

0.07

Postop

13.2 ± 2.59

14.1 ± 2.10

0.09

JOARR

44.9 ± 31.8

49.9 ± 32.2

0.55

  1. The bold value indicates considered significant (P < 0.05). SVA sagittal vertical axis, NRS numeric rating scale, PCS physical component summary, NDI neck disability index, EQ5D Euro QOL 5 dimensions, JOA Japanese Orthopedic Association, JOARR recovery rate of the JOA score