Table 1 OARSI recommended cartilage degeneration score for rat.
Grade | Description |
|---|---|
0 | No degeneration |
1 | Minimal degeneration; 5%–10% of the total projected cartilage area affected by matrix or chondrocyte loss |
2 | Mild degeneration; 11%–25% affected |
3 | Moderate degeneration; 26%–50% affected |
4 | Marked degeneration; 51%–75% affected |
5 | Severe degeneration; greater than 75% affected |
