Table 4 Displacement of the SI joint and the maximum von Mises stress on the bone around the screws.

From: Biomechanical performance evaluation of S2AI combine with LC-2 screw for day II pelvic crescent fracture dislocation via finite element analysis

Group

Displacement of SI joint observation points (mm)

Mean ± SD

The maximum von Mises stress in the bone around the screw (MPa)

A

B

C

D

Iliac screws

SI joint screws

Fracture group

1.935

2.587

2.196

1.945

2.16 ± 0.30

-

-

S1 + LC-2 group

1.962

2.479

2.168

1.920

2.13 ± 0.25

17.08

16.120

S1 + S2 + LC-2 group

1.942

2.457

2.146

1.898

2.11 ± 0.25

13.50

0.430

S2AI + LC-2 group

1.853

2.347

2.051

1.815

2.01 ± 0.24

0.245

0.215

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