Table 1 Baseline characteristics.

From: Comparison of the efficacies of TINAVI robot-assisted surgery and conventional open surgery for Levine–Edward type IIA (postreduction) hangman fractures

Indicators

Robot group

Traditional surgery group

t/Z/χ2

P

N = 25

N = 35

Sex

 Male

17

24

0.000

0.963

 Female

8

11

Age (years)

44.3 ± 12.6

42.4 ± 10.6

0.633

0.529

Follow-up time (months)

15.7 ± 4.2

14.6 ± 2.6

1.160

0.253

Type of injury

 Traffic accident

10

21

3.70

0.157

 Fall from height injuries

14

11

  

 Injuries from falling objects

1

3

  

Time from injury to hospitalization (days)

3.9 ± 1.3

3.7 ± 1.1

0.644

0.522

C2-3 injury

 Anterior longitudinal ligament

20

6

4.12

0.127

 Posterior longitudinal ligament

25

18

  

 Intervertebral disc

6

7

  

C2-3 Clamping angle and displacement

 Angle (°)

10.5 ± 3.5

11.7 ± 3.5

1.31

0.196

 Displacement (mm)

3.5 ± 1.3

3.4 ± 1.6

0.26

0.798

Combined with other vertebral injuries

0

3

  
  1. Analysis by independent samples t test. Comparison between the two groups, p < 0.05.
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