| Variables | Points for Scoring | Number of Patients |
|---|---|---|
| Degree of defect repair and filling of the defect | ||
| Complete | 20 | 20 |
| Hypertrophy | 15 | 0 |
| Incomplete >50% of the adjacent cartilage | 10 | 1 |
| Incomplete >50% of the adjacent cartilage | 5 | 0 |
| Subchondral bone exposed | 0 | 0 |
| Integration of border zone | ||
| Complete | 15 | 21 |
| Incomplete, demarcating border visible | 10 | 0 |
| Incomplete, defect visible <50% of the length | 5 | 0 |
| Incomplete, defect visible >50% of the length | 0 | 0 |
| Surface of the repair tissue | ||
| Surface intact | 10 | 20 |
| Surface damaged <50% of depth | 5 | 0 |
| Surface damaged >50% of depth | 0 | 1 |
| Structure of the repair tissue | ||
| Homogeneous | 5 | 21 |
| Inhomogeneous | 0 | 0 |
| Signal intensity of the repair tissue | ||
| Normal (identical to the adjacent cartilage) | 30 | 21 |
| Nearly normal (slight areas of signal alteration) | 15 | 0 |
| Abnormal (large areas of signal alteration) | 0 | 0 |
| Subchondral lamina | ||
| Intact | 5 | 21 |
| Not intact | 0 | 0 |
| Subchondral bone | ||
| Intact | 5 | 21 |
| Not intact (edema, granulation tissue, cysts, sclerosis) | 0 | 0 |
| Adhesions | ||
| No | 5 | 21 |
| Yes | 0 | 0 |
| Effusion | ||
| No | 5 | 21 |
| Yes | 0 | 0 |