Table 3 of optimum screw angle and screw safety range
From: CT-scan based anatomical study as a guidance for infra-acetabular screw placement
Male | Female | t value | P value | |
|---|---|---|---|---|
Angle between screw and sagittal plane(°) | ||||
All-in screw | −1.02 ± 6.31 | 8.19 ± 6.81 | −5.912 | < 0.001 |
In-out-in screw | 1.48 ± 6.97 | 7.90 ± 5.45 | −2.779 | 0.010 |
t value | −1.173 | 0.153 | ||
P value | 0.246 | 0.879 | ||
Angle between screw and coronal plane(°) | ||||
All-in screw | 53.77 ± 7.64 | 54.20 ± 7.31 | −0.238 | 0.813 |
In-out-in screw | 55.85 ± 6.37 | 53.15 ± 7.89 | 0.979 | 0.336 |
t value | −0.850 | 0.467 | ||
P value | 0.400 | 0.642 | ||
Safety range of angle between screw and sagittal plane(°) | ||||
All-in screw | 7.57 ± 3.57 | 5.06 ± 2.89 | 3.220 | 0.002 |
In-out-in screw | 6.34 ± 1.47 | 4.60 ± 1.58 | 2.993 | 0.006 |
t value | 1.709 | 0.731 | ||
P value | 0.094 | 0.468 | ||
Safety range of angle between screw and coronal plane(°) | ||||
All-in screw | 8.49 ± 2.37 | 6.73 ± 2.00 | 3.347 | 0.001 |
In-out-in screw | 8.02 ± 3.06 | 5.89 ± 2.09 | 2.229 | 0.034 |
t value | 0.547 | 1.373 | ||
P value | 0.587 | 0.176 | ||