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Table 1 M1SI screw parameters right and left comparison

From: Three-dimensional digital anatomical measurement of modified sacroiliac screws

Parameter

Mean ± SD

Comparison (Right vs Left)

Right (n = 100)

Left (n = 100)

Statistical value

P value

R (mm)

4.96 ± 0.38

4.96 ± 0.36

0.78

0.44

L (mm)

101.98 ± 12.85

102.13 ± 13.37

0.28#

0.78

AP (mm)

36.48 ± 6.27

36.24 ± 6.42

0.82#

0.41

BS (mm)

30.17 ± 3.96

30.77 ± 4.25

1.61#

0.11

α (°)

37.42° ± 4.58°

37.91° ± 4.67°

0.84#

0.41

β (°)

43.69° ± 6.40°

43.48° ± 5.92°

0.42#

0.68

γ (°)

22.1° ± 6.66°

21.75° ± 6.59°

0.66#

0.51

  1. ※ Wilcoxon signed-rank test; # paired t test