|  | MRI grades |
---|
 |  | 0 | 1 | 2 | 3 | 4 |
---|
US grades | 0 |
75
| 128 | 20 | 2 | 0 |
 | 1 | 13 |
8
| 19 | 1 | 1 |
 | 2 | 14 | 20 |
12
| 16 | 2 |
 | 3 | 9 | 12 | 13 |
31
| 21 |
 | 4 | 0 | 4 | 0 | 4 |
8
|
- Values in the cells describe the numbers of joints, apart from those denoting score (first column for US and first row for MRI). Numbers in bold denote exact agreements between respective identical scores. MRI, magnetic resonance imaging; US, ultrasonography.