Table 2 Measurement of transverse sacroiliac screw cancellous corridor

S1

Parameter measured

Male (n = 36)

Female (n = 33)

p value

Long axis of corridor (mm) (A)

25.44 ± 3.32

22.91 ± 2.46

0.001

Short axis of corridor (mm) (B)

14.01 ± 3.53

12.15 ± 3.22

0.025

Corridor length (mm) (L1)

153.07 ± 11.99

151.11 ± 8.73

0.438

Proportional position of the optimum entry point to long axis of secure corridor width (%)

35.96 ± 10.31

33.28 ± 7.2

0.172

S2

Parameter measured

Male (n = 47)

Female (n = 43)

p value

Long axis of corridor (mm) (A)

17.58 ± 2.36

16 ± 2.64

0.004

Short axis of corridor (mm) (B)

14.21 ± 2.19

13.14 ± 2.2

0.023

Corridor length (mm) (L2)

129.95 ± 0.89

136.5 ± 7.96

0.000

Proportional position of the optimum entry point to long axis of secure corridor width (%)

46.77 ± 9.02

42.25 ± 11.95

0.065