Table 1 Study group characteristics
| Â | CVI group (n = 442) | PSI group (n = 815) | p value |
|---|---|---|---|
Age (years) | 69.2 (9.5) | 68.9 (8.5) | 0.515 |
Gender | |||
 Female | 70.4% (311) | 62.2% (507) | 0.004 |
 Male | 29.6% (131) | 37.8% (308) | |
Surgical side | |||
 Left | 47.3% (209) | 47.7% (389) | 0.906 |
 Right | 52.7% (233) | 52.3% (426) | |
Kellgren–Lawrence classification | |||
 2° | 36% (159) | 18.2% (149) | < 0.001 |
 3° | 53.8% (238) | 44.5% (363) | |
 4° | 10.2% (45) | 37.3% (304) | |
Preoperative HKA | 176.7° (7.8) | 176.6° (9.0) | 0.905 |
Preoperative limb alignment | |||
 Varus | 71.0% (314) | 70.6% (575) | 0.784 |
 Valgus | 26.5% (117) | 27.5% (224) | |
 Neutral | 2.5% (11) | 2.0% (16) | |