Characteristics | Knee OA patients (n = 587) | Healthy controls (n =628) | P-value |
---|---|---|---|
Age (years) | 61.37 ± 10.64 | 60.46 ± 9.85 | 0.537 |
Gender (F/M) | 453/134 | 485/143 | 0.981 |
BMI (kg/m2) | 26.31 ± 4.45 | 24.75 ± 4.16 | <0.001 |
K/L grades | Â | Â | Â |
 Grade 2, n (%) | 292 (49.74) | 0 (0.0) | — |
 Grade 3, n (%) | 175 (29.81) | 0 (0.0) | — |
 Grade 4, n (%) | 120 (20.45) | 0 (0.0) | — |