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Table 2 Unexpected angular deformity after varization and derotation of the model according to inclination of the cutting plane

From: Unexpected angular or rotational deformity after corrective osteotomy

Varization (angle α)   Derotation
10° 20° 30° 40° 50° 60°
3D angle 0.9 1.7 2.6 3.4 4.2 5.0
Valgus 0.1 0.3 0.7 1.2 1.8 2.5
Extension 0.9 1.7 2.5 3.2 3.8 4.3
10° 3D angle 1.7 3.5 5.2 6.8 8.4 10.0
Valgus 0.1 0.6 1.3 2.3 3.5 5.0
Extension 1.8 3.5 5.0 6.5 7.7 8.7
15° 3D angle 2.6 5.2 7.7 10.2 12.6 14.9
Valgus 0.2 0.9 1.9 3.4 5.2 7.4
Extension 2.7 5.2 7.6 9.8 11.6 13.1
20° 3D angle 3.4 6.8 10.2 13.4 16.6 19.7
Valgus 0.3 1.1 2.5 4.4 6.8 9.7
Extension 3.6 7.1 10.3 13.2 15.6 17.5
25° 3D angle 4.2 8.4 12.6 16.6 20.6 24.4
Valgus 0.3 1.3 3.0 5.3 8.3 11.9
Extension 4.6 9.1 13.1 16.7 19.7 22.0
30° 3D angle 5.0 10.0 14.9 19.7 24.4 29.0
Valgus 0.4 1.5 3.4 6.1 9.6 13.9
Extension 5.7 11.2 16.1 20.4 23.9 26.6
35° 3D angle 5.7 11.4 17.1 22.6 28.1 33.3
Valgus 0.4 1.7 3.8 6.8 10.8 15.7
Extension 6.9 13.5 19.3 24.2 28.2 31.2
40° 3D angle 6.4 12.8 19.2 25.4 31.5 37.5
Valgus 0.4 1.7 4.0 7.3 11.7 17.2
Extension 8.3 16.0 22.8 28.3 32.7 36.0
45° 3D angle 7.1 14.1 21.1 28.0 34.8 41.4
Valgus 0.4 1.8 4.1 7.5 12.3 18.4
Extension 9.9 18.9 26.6 32.7 37.5 40.9
50° 3D angle 7.7 15.3 22.9 30.4 37.8 45.0
Valgus 0.4 1.8 4.1 7.6 12.5 19.2
Extension 11.7 22.2 30.8 37.5 42.4 45.9
55° 3D angle 8.2 16.4 24.5 32.5 40.5 48.4
Valgus 0.4 1.7 4.0 7.4 12.4 19.5
Extension 13.9 26.0 35.5 42.6 47.6 51.0
60° 3D angle 8.7 17.3 25.9 34.5 42.9 51.3
Valgus 0.4 1.6 3.7 7.0 11.9 19.1
Extension 16.7 30.6 40.9 48.1 53.0 56.3
  1. 3D angle: angle between the axes of the proximal fragment before and after derotation.