Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 3 Radiographic data and clinical outcomes of the iliosacral screw group
Variable | Small pelvic incidence (N = 41) | Large pelvic incidence (N = 24) | p |
|---|---|---|---|
Pelvic incidence (degrees, mean ± SD) | 42.81 ± 4.30 | 54.83 ± 5.38 |  < 0.001* |
Sacral slope (degrees, mean ± SD) | 33.34 ± 5.36 | 40.76 ± 5.28 |  < 0.001* |
Pelvic tilt (degrees, mean ± SD) | 9.47 ± 5.51 | 14.06 ± 4.83 | 0.001 |
Sacral dysmorphism (N) | 16 | 3 | 0.027* |
Reduction quality | |||
 Matta/Tornetta criteria |  |  | 0.406 |
  Excellent (N) | 19 | 9 |  |
  Good (N) | 17 | 9 |  |
  Fair (N) | 5 | 6 |  |
 Matta/Tornetta vertical (mm, mean ± SD) | 6.71 ± 4.60 | 7.21 ± 4.45 | 0.669 |
 Lefaivre rotational (mm, mean ± SD) | 8.88 ± 7.79 | 12.53 ± 7.06 | 0.064 |
IS screw level | |||
 S1 (N) | 39 | 24 | 0.527 |
 S2 (N) | 2 | 0 | 0.527 |
IS screw direction | |||
 Right/left (N, ratio) | 21/20 | 10/14 | 0.457 |
IS screw length (mm, mean ± SD) |  |  |  |
IS screw ADIO on mpCT | Â | Â | Â |
 Coronal (degrees, mean ± SD) | 6.45 ± 3.93 | 5.48 ± 3.03 | 0.301 |
 Axial (degrees, mean ± SD) | 9.31 ± 6.48 | 9.28 ± 7.62 | 0.984 |
IS screw perforation (N) | 0 | 2 | 0.133 |
Perforation into | |||
 Foramen/canal (N, ratio) | 0/0 | 1/1 | 0.172 |
Perforation grading | Â | Â | 0.172 |
 Grade 1 (N) | 0 | 1 |  |
 Grade 2 (N) | 0 | 1 |  |
 Revision (N) | 0 | 0 |  |
Postel Merle d’Aubigne score | |||
 At 6 months (mean ± SD) | 10.68 ± 2.62 | 11.00 ± 2.25 | 0.622 |
 At 1 year (mean ± SD) | 14.66 ± 2.65 | 15.00 ± 2.21 | 0.597 |
Majeed score | |||
 At 6 months (mean ± SD) | 53.71 ± 14.36 | 57.96 ± 13.96 | 0.249 |
 At 1 year (mean ± SD) | 73.49 ± 12.89 | 75.08 ± 11.39 | 0.617 |