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Table 2 Comparison of the distance from screw to posterior acetabular wall between the male and female (Mean ± SD, mm, n = 100)

From: The placement of percutaneous retrograde acetabular posterior column screw based on imaging anatomical study of acetabular posterior column corridor

Layers

H2 (mm)

t

p

Layers

H2 (mm)

t

p

Male

Female

Male

Female

1

7.61 ± 2.21

5.11 ± 1.65

6.390

 < 0.001

8

7.45 ± 1.75

5.35 ± 1.29

6.839

 < 0.001

2

5.65 ± 2.37

4.84 ± 1.82

1.923

0.057

9

7.50 ± 1.74

5.78 ± 1.30

5.578

 < 0.001

3

3.39 ± 1.54

3.94 ± 1.61

 − 1.727

0.087

10

6.82 ± 1.70

5.55 ± 1.41

4.043

 < 0.001

4

3.03 ± 0.90

2.33 ± 1.03

3.593

0.001

11

6.11 ± 1.53

4.98 ± 1.52

3.705

 < 0.001

5

4.21 ± 0.88

2.43 ± 1.24

8.213

 < 0.001

12

5.42 ± 1.48

4.07 ± 1.51

4.521

 < 0.001

6

5.52 ± 1.12

3.30 ± 1.24

9.331

 < 0.001

13

4.78 ± 1.40

3.42 ± 1.33

4.935

 < 0.001

7

6.81 ± 1.38

4.49 ± 1.32

8.526

 < 0.001