Table 5 Postoperative range of motion of the knee and radiographic evaluations in Group A, B, C, and D at 30° flexion
Group A | Group B | Group C | Group D | P value | |
|---|---|---|---|---|---|
Range of motion at 1 year postoperatively | |||||
Maximum extension (degrees) | − 0.5 ± 2.5 | − 0.4 ± 1.7 | − 0.5 ± 1.6 | − 1.1 ± 1.9 | 0.40 |
Maximum flexion (degrees) | 125.2 ± 10.9 | 122.1 ± 16.2 | 127.0 ± 3.5 | 122.4 ± 10.1 | 0.48 |
Postoperative HKA angle (degrees) | 179.2 ± 2.1 | 179.8 ± 2.1 | 179.3 ± 1.4 | 178.8 ± 2.0 | 0.08 |
Femoral varus angle (degrees) | 0.7 ± 1.5 | 0.1 ± 1.5 | 0.1 ± 2.0 | 1.0 ± 2.0 | 0.04a |
Femoral flexion angle (degrees) | 4.5 ± 2.2 | 4.7 ± 2.6 | 5.1 ± 3.7 | 4.5 ± 3.2 | 0.91 |
Femoral external rotational angle (degrees) | 0.2 ± 1.5 | − 0.1 ± 1.8 | 0.9 ± 0.9 | 0.1 ± 1.8 | 0.38 |
Tibial varus angle (degrees) | 0.2 ± 1.3 | 0.1 ± 1.2 | 0.4 ± 1.0 | 0.2 ± 1.3 | 0.88 |
Tibial posterior slope angle (degrees) | 3.1 ± 1.7 | 3.2 ± 1.6 | 3.4 ± 11.7 | 3.0 ± 1.6 | 0.86 |
Tibial external rotational angle (degrees) | 2.7 ± 5.0 | 4.2 ± 3.5 | 3.6 ± 3.6 | 2.6 ± 4.2 | 0.20 |