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Table 3 Differences between Screws I and Screw II

From: Infra-acetabular screw exited between ischial tuberosity and ischial spine is more suitable for Asian population: a 3D morphometric study

Group

Diameter (mm)

Length (mm)

Anterior (mm)

Medial (mm)

Sagittal(°)

Coronal(°)

Transverse(°)

M

F

M

F

M

F

M

F

M

F

M

F

M

F

SI

5.63 ± 1.23

4.85 ± 1.14

98.14 ± 4.24

89.84 ± 4.74

6.27 ± 4.11

9.12 ± 4.94

11.20 ± 2.70

13.79 ± 3.06

4.16 ± 2.79

−6.65 ± 4.32

51.28 ± 6.61

54.74 ± 9.55

38.30 ± 6.48

34.08 ± 9.56

SII

6.02 ± 1.36

5.23 ± 1.32

81.05 ± 4.55

78.99 ± 4.11

20.55 ± 4.98

19.81 ± 5.05

11.26 ± 2.60

13.94 ± 3.26

3.86 ± 2.17

−7.88 ± 5.05

76.04 ± 6.71

74.10 ± 7.76

12.78 ± 7.11

12.58 ± 8.01

t

5.128

4.316

35.447

18.808

21.312

15.860

0.211

0.304

0.776

1.968

23.597

23.353

23.831

20.819

p

0.000

0.000

0.000

0.000

0.000

0.000

0.834

0.763

0.442

0.057

0.000

0.000

0.000

0.000

  1. SI Screw I, SII Screw II