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Table 3 Interclass correlation coefficient (ICC) between two observers at postoperative

From: Robot-assisted total knee arthroplasty improves mechanical alignment and accuracy of component positioning compared to the conventional technique

 

Intraclass correlation

Robotic TKA

Conventional TKA

HKA axis

0.841 (0.788 to 0.882)

0.839 (0.784 to 0.880)

α

0.751 (0.658 to 0.819)

0.853 (0.796 to 0.894)

β

0.880 (0.839 to 0.911)

0.875 (0.831 to 0.907)

δ

0.903 (0.869 to 0.929)

0.922 (0.894 to 0.943)

  1. The ICC between two observers was within the 95% confidence interval. < 0.5: poor, 0.50–0.75: moderate, 0.75–0.90: good, > 0.90: excellent
  2. HKA hip-knee-ankle, α coronal inclination of the femoral component, β coronal inclination of the tibial component, δ sagittal inclination of the tibial component