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Table 1 Baseline characteristics and perioperative parameters of all patients

From: Size selection and placement of pedicle screws using robot-assisted versus fluoroscopy-guided techniques for thoracolumbar fractures: possible implications for the screw loosening rate

Characteristic

RAF

FGF

Statistic (χ2/t)

P value

No. of pts

34

36

Mean age (years)

42.8 ± 8.7

39.8 ± 10.7

1.277

0.206

Sex

  

0.370

0.558

 Male

25

26

 Female

9

10

Mean BMI (kg/m2)

23.8 ± 2.6

24.0 ± 2.7

0.699

0.718

Mean HU values

184.4 ± 66.5

202.4 ± 80.4

− 1.026

0.311

Mechanism of injury

  

0.475

0.830

 Traffic accident

22

22

  

 Fall

12

14

  

Fracture level

  

0.826

0.972

 T10

0

0

  

 T11

3

4

  

 T12

8

8

  

 L1

18

16

  

 L2

5

8

  

Fracture type

  

0.214

0.543

 A3

25

21

  

 A4

9

15

  

TLICS score

4.5 ± 0.5

4.6 ± 0.5

− 0.448

0.656

  1. RAF robot-assisted percutaneous pedicle screw fixation, FGF fluoroscopy-guided percutaneous pedicle screw fixation, BMI body mass index, HU Hounsfeld Unit, TLICS Score Thoracolumbar Injury Classification and Severity Score