|
Category
|
Score
|
|---|
|
Cell morphology
|
|
Hyaline cartilage
|
0
|
|
Mostly hyaline cartilage
|
1
|
|
Mostly fibrocartilage
|
2
|
|
Mostly non-cartilage
|
3
|
|
Non-cartilage only
|
4
|
|
Matrix staining
|
|
Normal
|
0
|
|
Slightly reduced
|
1
|
|
Markedly reduced
|
2
|
|
No metachromatic stain
|
3
|
|
Surface regularity*
|
|
Smooth (> 3/4)
|
0
|
|
Moderate (> 1/2–3/4)
|
1
|
|
Irregular (1/4–1/2)
|
2
|
|
Severely irregular (< 1/4)
|
3
|
|
Thickness of cartilage#
|
|
> 2/3
|
0
|
|
1/3–2/3
|
1
|
|
< 1/3
|
2
|
|
Integration of donor with adjacent host cartilage
|
|
Both edges integrated
|
0
|
|
One edge integrated
|
1
|
|
Neither edge integrated
|
2
|
|
Total maximum
|
14
|
- *Total smooth area of the reparative cartilage compared with the entire area of the cartilage defect
- #Average thickness of the reparative cartilage compared with that of the surrounding cartilage
