Table 1 Scoring systems for macroscopic and microscopic evaluation
Mankin Microscopic Scoring System | Value | Yoshimi Macroscopic Scoring System | Value |
|---|---|---|---|
Structure | |||
 Normal | 0 | Normal cartilage | 0 |
 Irregular surface | 1 | Softening | 1 |
 Pannus and irregular surface | 2 | Fibrillation | 2 |
 Cleft through transitional zone | 3 | Erosion | 3 |
 Cleft through radial zone | 4 | Ulceration | 4 |
 Cleft through calcification zone | 5 | Cartilage damage | 5 |
 Complete disorganization | 6 |  |  |
Cell | |||
 Normal | 0 |  |  |
 Diffuse hypercellularity | 1 |  |  |
 Cloning | 2 |  |  |
 Hypocellularity | 3 |  |  |
Total score | Â | Total score | Â |
 Minimum score | 0 |  Minimum score | 0 |
 Maximum score | 9 |  Maximum score | 5 |