Table 6 Comparison of M3SI screw parameters between genders
From: Three-dimensional digital anatomical measurement of modified sacroiliac screws
Parameter | Right (Mean ± SD) | Left (Mean ± SD) | ||||||
|---|---|---|---|---|---|---|---|---|
Male (n = 50) | Female (n = 50) | Statistical value | P value | Male (n = 50) | Female (n = 50) | Statistical value | P value | |
R (mm) | 4.24 ± 0.41 | 3.91 ± 0.08 | 3.42※ | < 0.01 | 4.26 ± 0.44 | 3.91 ± 0.59 | 3.38※ | < 0.01 |
L (mm) | 128.05 ± 8.15 | 121.24 ± 14.77 | 2.73※ | < 0.01 | 127.92 ± 7.51 | 120.56 ± 15.45 | 3.08※ | < 0.01 |
AP (mm) | 34.58 ± 6.39 | 33.39 ± 6.27 | 0.94# | 0.35 | 34.41 ± 6.19 | 32.45 ± 5.68 | 1.65※ | 0.11 |
BS (mm) | 27.73 ± 2.92 | 27.76 ± 3.73 | 0.04# | 0.96 | 28.75 ± 3.59 | 28.62 ± 3.12 | 0.19# | 0.85 |
α (°) | 38.06° ± 5.38° | 38.81° ± 4.04° | 1.07※ | 0.29 | 38.63° ± 4.5 | 40.32° ± 4.41° | 1.91# | 0.06 |
β (°) | 6.63° ± 5.03° | 7.21° ± 4.77° | 0.73※ | 0.47 | 7.11° ± 4.71° | 6.16° ± 4.48° | 1.08※ | 0.28 |
γ (°) | 50.69° ± 5.19° | 49.81° ± 4.16° | 0.93# | 0.35 | 50.09° ± 4.46° | 48.26° ± 4.96° | 1.94# | 0.06 |