Table 2 Imaging data of three groups of patients
Group A (n = 68) | Group B (n = 83) | Group C (n = 82) | Z value | P value | |
|---|---|---|---|---|---|
Preoperative PCO (mm) | 24.27 ± 3.01 | 24.39 ± 3.04 | 24.41 ± 2.76 | 0.019 | 0.991 |
Postoperative PCO (mm) | 25.69 ± 2.71 | 25.87 ± 2.91 | 26.03 ± 3.25 | 0.077 | 0.962 |
Change of PCO (mm) | 1.42 ± 2.13 | 1.47 ± 2.03 | 1.62 ± 2.47 | 0.209 | 0.901 |
Preoperative joint line (mm) | 16.38 ± 3.76 | 16.71 ± 3.06 | 16.56 ± 3.83 | 0.410 | 0.815 |
Postoperative joint line (mm) | 17.06 ± 2.97 | 17.71 ± 2.98 | 17.20 ± 2.82 | 1.529 | 0.465 |
Change of joint line (mm) | 0.68 ± 3.19 | 1.00 ± 2.86 | 0.64 ± 3.47 | 0.996 | 0.608 |