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Table 1 The mean difference between pre-operative planning and post-operative component’s coronal and sagittal alignment

From: Comparison of post-operative three-dimensional and two-dimensional evaluation of component position for total knee arthroplasty

   3D evaluation 2D evaluation p value
Femoral component Coronal alignment (°) 1.6 ± 1.4 1.8 ± 1.2 0.083
  (0.03–7.48) (0–6.0)  
Sagittal alignment (°) 2.6 ± 1.8 1.9 ± 1.5 0.013
  (0.02–6.59) (0–8.01)  
Tibial component Coronal alignment (°) 2.2 ± 1.8 1.3 ± 1.2 0.003
  (0.03–6.54) (0–5.01)  
Sagittal alignment (°) 3.2 ± 2.4 1.8 ± 1.4 < 0.001
  (0.05–9.21) (0–6.0)  
  1. Values are presented as mean ± standard deviation (minimum to maximum). The statistical significance was set at p < 0.05
  2. 3D three-dimensional, 2D two-dimensional