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 incorporated, ¼ with notable border >1 mm wide |
2 |
|
1/2 of graft incorporated, ½ with notable border >1 mm wide |
1 |
|
From no contact to ¼ of graft integrated |
0 |
Macroscopic appearance |
Intact smooth surface |
4 |
|
Fibrillated surface |
3 |
|
Small, scattered fissures or cracks |
2 |
|
Several, small or few but large cracks |
1 |