Table 1.
Clinical and histopathologic arthritis scores
| Clinical arthritis score | |
| 0 | No signs of inflammation |
| 1 | Mild swelling and erythema in the digit |
| 2 | Moderate swelling and erythema in the digit |
| 3 | Severe swelling and erythema in the whole area to the ankle |
| 4 | Severe swelling, erythema, disability and deformity of the limb |
| Histopathologic arthritis score | |
| Intra articular exudate | |
| 0 | No exudate |
| 1 | few inflammatory cells in joint cavity |
| 2 | Inflammatory cells partially filled joint cavity |
| 3 | Inflammatory cells totally filled joint cavity |
| Synovitis | |
| 0 | No inflammation |
| 1 | Mild |
| 2 | Moderate |
| 3 | Severe |
| Cartilage erosion | |
| 0 | Intact cartilaginous surface |
| 1 | Minor destruction in the cartilage surface |
| 2 | Focal loss of cartilage |
| 3 | Almost absent cartilaginous surface |