| Characteristics | Group 1 | Group 2 | P-Value |
|---|---|---|---|
| Patients with Radiological Evidence of Subchondral Cysts (n=247) |
Patients with No Radiological Evidence of Subchondral Cysts (n=559) |
||
| Demographics | |||
| Mean Age (range) (years) | 66 (48-83) | 66 (32-85) | 1.00 |
| Gender: Female (%) | 84 | 76 | 0.009 |
| Percentage of Males with Subchondral Cysts (%) | 23 | 0.007 | |
| Percentage of Females with Subchondral Cysts (%) | 33 | ||
| Mean Body Mass Index (range) (kg/m2) | 28.6 (19.8-45.0) | 28.1 (18.9-46.4) | 0.165 |
| Operated Limb: Right (%) | 55.1 | 49.6 | 0.149 |
| Race | |||
| Chinese (%) | 88.2 | 87.7 | 0.840 |
| Malay (%) | 6.9 | 6.4 | 0.795 |
| Indian (%) | 4.9 | 5.9 | 0.556 |
| Pre-operative Measurements & Scores | |||
| Alignment (s.d.) (degrees)* | 6 (±8) | 4 (±8) | 0.001 |
| Genu Varus (%) | 80.2 | 73.7 | 0.039 |
| Knee Society Score (s.d.) | 37 (±8) | 36 (±8) | 0.102 |