Table 2 Comparison of M1SI 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) | 4.98 ± 0.38 | 4.94 ± 0.38 | 0.81※ | 0.42 | 4.99 ± 0.37 | 4.92 ± 0.36 | 1.19※ | 0.23 |
L (mm) | 103.08 ± 13.17 | 100.90 ± 12.57 | 0.85# | 0.39 | 103.39 ± 12.89 | 100.87 ± 13.85 | 0.94# | 0.35 |
AP (mm) | 37.01 ± 6.12 | 35.95 ± 6.43 | 0.85# | 0.39 | 37.02 ± 6.21 | 35.47 ± 6.60 | 1.21# | 0.23 |
BS (mm) | 30.74 ± 3.76 | 29.59 ± 4.11 | 1.47# | 0.15 | 31.31 ± 4.58 | 30.22 ± 3.86 | 1.29# | 0.19 |
α (°) | 37.78° ± 3.55° | 37.05° ± 4.62° | 0.79# | 0.43 | 37.88° ± 4.74° | 37.94° ± 4.64° | 0.06# | 0.95 |
β (°) | 43.17° ± 6.77° | 44.21° ± 6.04° | 0.81# | 0.42 | 43.01° ± 6.25° | 43.96° ± 5.59° | 0.81# | 0.42 |
γ (°) | 22.23° ± 6.72° | 21.97° ± 6.66° | 0.19# | 0.85 | 22.22° ± 7.50° | 21.27° ± 5.56° | 0.92※ | 0.36 |