Prevalence of knee OA based on a combination of KL grades | ||||||
Combination of KL grades | Group, n | Total Population a | ||||
Healthy | Early OA | Late OA | ||||
Total | Mild | Severe | ||||
0:0 | 38 | 38 | – | – | – | 76 |
1:0 | – | 4 | – | – | – | 4 |
1:1 | – | 2 | – | – | – | 2 |
2:0 | – | – | – | – | – | 0 |
2:1 | – | – | 1 | 1 | – | 1 |
2:2 | – | – | 34 | 34 | – | 34 |
3:0 | – | – | 0 | – | – | 0 |
3:1 | – | – | 10 | – | 10 | 10 |
3:2 | – | – | 10 | – | 10 | 10 |
3:3 | – | – | 63 | – | 63 | 63 |
4:0 | – | – | 0 | – | 0 | 0 |
4:1 | – | – | 3 | – | 3 | 3 |
4:2 | – | – | 1 | – | 1 | 1 |
4:3 | – | – | 4 | – | 4 | 4 |
4:4 | – | – | 4 | – | 4 | 4 |
Total | 38 | 44 | 130 | 35 | 95 | 212 |
Prevalence of knee OA based on the mean of KL grades | ||||||
Mean of KL grades | Group, n | Total Population a | ||||
Healthy | Early OA | Late OA | ||||
Total | Mild | Severe | ||||
0.0 | 38 | 38 | – | – | – | 76 |
0.5 | – | 4 | – | – | – | 4 |
1.0 | – | 2 | – | – | – | 2 |
1.5 | – | – | 1 | 1 | – | 1 |
2.0 | – | – | 44 | 34 | 10 | 44 |
2.5 | – | – | 13 | – | 13 | 13 |
3.0 | – | – | 64 | – | 64 | 64 |
3.5 | – | – | 4 | – | 4 | 4 |
4.0 | – | – | 4 | – | 4 | 4 |
Total | 38 | 44 | 130 | 35 | 95 | 212 |