| Categories |
Score |
| Degree of defect repair |
|
| In level with surrounding cartilage |
4 |
| 75% repair of defect depth |
3 |
| 50% repair of defect depth |
2 |
| 25% repair of defect depth |
1 |
| 0% repair of defect depth |
0 |
| Integration to border zone |
|
| Complete integration with surrounding cartilage |
4 |
| Demarcating border <1 mm |
3 |
| 3/4 of graft integrated, 1/4 with a notable border >1 mm width |
2 |
| 1/2 of graft integrated with surrounding cartilage, 1/2 with a notable border >1 mm |
1 |
| From no contact to 1/4 of graft integrated with surrounding cartilage |
0 |
| Macroscopic appearance |
|
| Intact smooth surface |
4 |
| Fibrillated surface |
3 |
| Small, scattered fissures or cracs |
2 |
| Several, small or few but large fissures |
1 |
| Total degeneration of grafted area |
0 |
| Overall repair assessment |
|
| Grade I: normal |
12 |
| Grade II: nearly normal |
11-8 |
| Grade III: abnormal |
7-4 |
| Grade IV: severly abnormal |
3-1 |
