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Table 3 Comparing the deviations in different planes from neutral alignment and identification of outliers between NAV-TKR and CONV-TKR groups

From: No difference in long-term functional outcomes or survivorship after total knee arthroplasty with or without computer navigation: a 17-year survivorship analysis

  Mean (range) p-Value
NAV-TKR CONV-TKR
Deviation in different planes from neutral alignment (degrees)
Femoral coronal plane 1.00 (0–5) 1.53 (0–10) 0.01
Tibial coronal plane 1.24 (0–5) 1.91 (0–7.5)  < 0.01
Overall coronal plane 1.89 (0–7) 2.62 (0–9.5) 0.01
Femoral sagittal plane 2.04 (0–9) 3.27 (0–10)  < 0.01
Tibial sagittal plane 1.99 (0–10) 2.55 (0–14) 0.04
Outliers (> 3°)    
Femoral coronal plane 0 (0%) 18 (12.5%) 0.01
Tibial coronal plane 3 (6.1%) 29 (20.1%) 0.03
Overall coronal plane 9 (18.3%) 46 (31.9%) 0.01
Femoral sagittal plane 10 (20.4%) 70 (48.6%)  < 0.01
Tibial sagittal plane 16 (32.7%) 48 (33.3%) 1.00