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Table 3 Displacement of the pelvis fixed with three types of internal fixation under vertical load (‾x ± s, n = 5)

From: Biomechanical study of three kinds of internal fixation for the treatment of sacroiliac joint disruption using biomechanical test and finite element analysis

Load (N)

â‘  (mm)

â‘¡ (mm)

â‘¢ (mm)

F value/p value

p value

â‘  vs â‘¡

â‘  vs â‘¢

â‘¡ vs â‘¢

100

0.496 Â± 0.102

0.6768 Â± 0.130

1.1826 Â± 0.220

78.209/0.000

0.039

0.000

0.000

200

0.945 Â± 0.193

1.334 Â± 0.272

2.002 Â± 0.296

87.893/0.000

0.004

0.000

0.000

300

1.466 Â± 0.311

1.956 Â± 0.342

2.832 Â± 0.366

203.61/0.000

0.000

0.000

0.000

400

1.865 Â± 0.369

2.478 Â± 0.392

3.871 Â± 0.601

207.281/0.000

0.001

0.000

0.000

500

2.477 Â± 0.321

3.128 Â± 0.519

4.704 Â± 0.600

129.958/0.000

0.005

0.000

0.000

  1. â‘  MIAP combined with one IS screw; â‘¡ two IS screws; â‘¢ anterior plate