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 |
No repair of defect depth |
0 |
Integration to border zone |
|
Complete integration with surrounding cartilage |
4 |
Demarcating border-1 mm |
3 |
Three-quarters of graft integrated, one-quarter with a notable border-1 mm in width |
2 |
One-half of graft integrated with surrounding cartilage, one-half with a notable border-1 mm |
1 |
From no contact, to one-quarter of graft integrated with surrounding cartilage |
0 |
Macroscopic appearance |
|
Intact smooth surface |
4 |
Fibrillated surface |
3 |
Small, scattered fissures or cracks |
2 |
Several small or few large fissures |
1 |
Total degeneration of grafted area |
0 |
Overall repair assessment |
|
Grade I, normal |
12 |
Grade II, nearly normal |
8-11 |
Grade III, abnormal |
4-7 |
Grade IV, severely abnormal |
1-3 |