Table 4 Comparison of M2SI 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) | 4.71 ± 0.29 | 4.65 ± 0.34 | 0.43※ | 0.66 | 4.71 ± 0.29 | 4.67 ± 0.31 | 0.41※ | 0.69 |
L (mm) | 112.59 ± 7.67 | 109.89 ± 5.98 | 1.96# | 0.06 | 112.14 ± 7.70 | 109.95 ± 7.07 | 0.35# | 1.21 |
AP (mm) | 25.62 ± 5.04 | 25.53 ± 4.07 | 0.11# | 0.92 | 25.65 ± 5.14 | 24.92 ± 3.81 | 0.77※ | 0.44 |
BS (mm) | 28.27 ± 4.09 | 28.71 ± 4.07 | 0.54# | 0.59 | 29.43 ± 3.78 | 29.92 ± 3.19 | 0.71# | 0.49 |
α (°) | 32.99° ± 5.03° | 34.98° ± 5.44° | 0.27# | 0.78 | 38.84° ± 4.09° | 39.77° ± 4.97° | 0.94※ | 0.35 |
β (°) | 25.07° ± 5.68° | 25.33° ± 5.72° | 0.23# | 0.82 | 25.06° ± 5.77° | 24.95° ± 6.43° | 0.09# | 0.93 |
γ (°) | 40.02° ± 6.36° | 40.14° ± 5.52° | 0.11# | 0.92 | 40.29° ± 5.65° | 39.37° ± 4.82° | 0.88# | 0.38 |