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Table 3 Evaluation of the efficacy of the robot-assisted system

From: The effect of robot-navigation-assisted core decompression on early stage osteonecrosis of the femoral head

 

CCD group (n = 20 hips)

RCD group (n = 16 hips)

T

p

Duration of trajectory planning (min)

Not applicable

2.38 ± 0.50

Duration of surgery (min)

60.15 ± 8.42

35.88 ± 3.83

10.663

< 0.001

Guide wire insertion time (min)

17.25 ± 6.18

2.38 ± 1.36

9.421

< 0.001

Number of guidewire attempts

6.40 ± 2.60

3.19 ± 1.76

4.219

< 0.001

Radiation exposure for guide wire insertion (s)

6.95 ± 2.09

3.19 ± 1.28

6.312

< 0.001

Radiation exposure after guide wire insertion (s)

7.65 ± 1.04

7.31 ± 1.01

0.978

0.335