Table 3 Proportion of outliers in the three groups
Variable | Conventional TKA (n = 50) | Robot-arm assisted TKA (n = 50) | p-value b | |
|---|---|---|---|---|
Initial stage | Proficiency stage | |||
HKA angle (°) | 10/50 (20%) | 1/18 (6%) | 1/32 (3%) | 0.048 |
Coronal femoral component (°) | 9/50 (18%) | 0/18 (0%) | 1/32 (3%) | 0.037 |
Coronal tibial component (°) | 3/50 (6%) | 0/18 (0%) | 0/32 (0%) | 0.290 |
Sagittal femoral component (°) | 7/50 (14%) | 2/18 (11%) | 2/32 (6%) | 0.500 |
Sagittal tibial component (°) | 11/50 (22%) | 2/18 (11%) | 2/32 (6%) | 0.007 |
Femoral component rotation (°) | 6/50 (12%) | 0/18 (0%) | 0/32 (0%) | 0.043 |