Table 7 M4SI screw parameters right and left comparison
From: Three-dimensional digital anatomical measurement of modified sacroiliac screws
Parameter | Mean ± SD | Comparison (Right vs Left) | ||
|---|---|---|---|---|
Right (n = 100) | Left (n = 100) | Statistical value | P value | |
R (mm) | 3.43 ± 0.32 | 3.4 ± 0.39 | 0.41※ | 0.68 |
L (mm) | 89.05 ± 9.48 | 90 ± 8.54 | 2.81# | < 0.01 |
AP (mm) | 49.49 ± 7.43 | 44.83 ± 7.44 | 2.08# | 0.04 |
BS (mm) | 26.37 ± 3.11 | 27.42 ± 3.09 | 3.52# | < 0.01 |
α (°) | 33.97° ± 5.31° | 35.17° ± 4.85° | 1.78# | 0.08 |
β (°) | 23.95° ± 8.71° | 22.92° ± 8.53° | 1.89# | 0.06 |
γ (°) | 45.29° ± 6.45° | 45.1° ± 5.43° | 0.28# | 0.78 |