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Table 3 Absolute Differences in External Torsion, Lateral View

From: Radiographic cortical thickness parameters as predictors of rotational alignment in proximal tibial shaft fractures: a cadaveric study

  10° 15° 20° 25° 30° p-Value
Anterior Cortical Thickness
 ACT Mean 0.38 mm 0.89 mm 1.21 mm 1.62 mm 2.37 mm 2.95 mm 3.22 mm <  0.001
 ACT SD 0.94 mm 0.83 mm 0.88 mm 1.28 mm 1.51 mm 1.74 mm 1.81 mm  
 ACT Visibility 15.79% 57.89% 68.42% 73.68% 89.47% 94.74% 89.47%  
 ACT Pos. Difference 36.84% 63.16% 68.42% 78.95% 89.47% 89.47% 84.21%  
Posterior Cortical Thickness
 PCT Mean 0.17 mm 0.44 mm 0.71 mm 0.83 mm 1 mm 1.2 mm 1.42 mm <  0.001
 PCT SD 0.32 mm 0.38 mm 0.54 mm 0.67 mm 0.68 mm 0.65 mm 0.8 mm  
 PCT Visibility 10.53% 36.84% 42.11% 52.63% 73.68% 78.95% 84.21%  
 PCT Pos. Difference 47.37% 31.58% 42.11% 57.89% 73.68% 78.95% 78.95%  
Diameter
 Dia.lat Mean 0.41 mm 2.05 mm 3.47 mm 4.82 mm 6.31 mm 7.19 mm 7.32 mm <  0.001
 Dia.lat SD 0.52 mm 0.95 mm 1.36 mm 1.6 mm 1.97 mm 2.34 mm 3.19 mm  
 Dia.lat Visibility 21.05% 94.74% 100% 100% 100% 100% 94.74%  
 Dia.lat Pos. Difference 73.68% 94.74% 94.74% 89.47% 94.74% 94.74% 89.47%  
  1. 1 Visibility is given if the absolute difference exceeds 0.6 mm
  2. 2 A positive difference is equivalent to a greater proximal value compared to the distal value