Table 4 Force line and joint line accuracy for 3 surgeons
From: Learning curve analysis of robotic-assisted total knee arthroplasty with a Chinese surgical system
Force line accuracy | Surgeon 1 | Surgeon 2 | Surgeon 3 | P value |
|---|---|---|---|---|
Post mHKA | ||||
Test | 178.70 (2.21) | 178.43 (1.93) | 178.25 (2.05) | 0.793 |
Control | 177.8 (4.2) | 177.12 (4.20) | 178.29 (4.56) | 0.575 |
P value | 0.322 | 0.143 | 0.967 | – |
Post mHKA deviation value (°) | ||||
Test | 1.87 (1.59) | 1.91 (1.41) | 2.24 (1.45) | 0.709 |
Control | 3.42 (3.21) | 3.97 (3.15) | 4.15 (2.44) | 0.606 |
P value | 0.029 | 0.003 | 0.001 | – |
Number of cases within ± 3°/total (percentage) | ||||
Test | 16/20 (80%) | 15/21 (71.4%) | 14/18 (77.8%) | – |
Control | 17/30 (56.7%) | 14/30 (46.7%) | 11/30 (36.7%) | – |
mLDFA | ||||
Test | 90.38 (1.68) | 90.64 (1.47) | 91.18 (1.74) | 0.318 |
Control | 90.84 (2.79) | 90.85 (2.25) | 90.89 (2.29) | 0.997 |
P value | 0.477 | 0.695 | 0.619 | – |
MPTA | ||||
Test | 89.34 (1.69) | 88.85 (1.33) | 89.47 (1.96) | 0.467 |
Control | 88.64 (1.50) | 88.15 (2.65) | 89.14 (2.68) | 0.269 |
P value | 0.141 | 0.225 | 0.634 | – |
JLO | ||||
Test | 179.72 (2.33) | 179.49 (2.05) | 180.64 (2.68) | 0.286 |
Control | 179.47 (2.55) | 179.00 (2.86) | 180.03 (3.04) | 0.375 |
P value | 0.724 | 0.483 | 0.467 | – |