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Table 2 Comparison of all-in and in-out-in screw parameters between male and female

From: CT-scan based anatomical study as a guidance for infra-acetabular screw placement

 

Male

Female

t value

P value

AB (mm)

8.03 ± 2.01

8.68 ± 2.35

−1.255

0.214

OB (mm)

8.49 ± 2.68

8.87 ± 2.79

−0.593

0.555

OM (mm)

6.61 ± 1.83

4.47 ± 1.41

5.852

< 0.001

OP (mm)

99.43 ± 4.04

88.83 ± 3.71

11.440

< 0.001

A1B1 (mm)

10.49 ± 2.58

10.10 ± 2.63

0.395

0.696

O1B1 (mm)

6.17 ± 1.84

6.63 ± 1.49

−0.755

0.457

O1M1(mm)

4.22 ± 1.11

3.53 ± 1.17

1.594

0.121

O1P1 (mm)

98.19 ± 4.37

87.31 ± 4.48

6.496

< 0.001

O1D (mm)

20.03 ± 4.00

19.08 ± 3.41

0.688

0.497

O1E (mm)

30.64 ± 4.62

25.79 ± 3.34

3.283

0.003

DE (mm)

10.61 ± 2.04

6.71 ± 2.22

4.796

< 0.001

  1. AB: posterior distance between the entry point of all-in screw and the apex of iliopubic eminence; OB: medial distance between the entry point of all-in screw and the apex of iliopubic eminence; OM: distance between entry point of all-in screw and pelvic rim; OP: length of the infra-acetabular corridor (IAC); A1B1: posterior distance between the entry point of in-out-in screw and the apex of iliopubic eminence; O1B1: medial distance between the entry point of in-out-in screw and the apex of iliopubic eminence; O1M1: distance between entry point of in-out-in screw and true pelvic rim; O1P1: length of the infra-acetabular corridor (IAC); O1D: distance between entry point of in-out-in screw and the proximal perforation point in the quadrilateral plate; O1E: distance between entry point of in-out-in screw and the distal perforation point in the quadrilateral plate; DE: length of screw outside of the cortex.