Table 3 Histological features measured for OsScore
Feature | Score |
|---|---|
Tissue morphology | Hyaline = 3 |
| Â | Hyaline/fibrocartilage = 2 |
| Â | Fibrocartilage = 1 |
| Â | Fibrous tissue = 0 |
Matrix staining | Near normal = 1 |
| Â | Abnormal = 0 |
Surface architecture | Near normal = 2 |
| Â | Moderately irregular = 1 |
| Â | Very irregular = 0 |
Chondrocyte clusters | None = 1 |
|  | ≤ 25% cells = 0.5 |
| Â | >25% cells = 0 |
Mineral | Absent = 1 |
| Â | Present = 0 |
Blood vessels | Absent = 1 |
| Â | Present = 0 |
Basal integration | Good = 1 |
| Â | Poor = 0 |
Maximum total possible | 10 |