Table 2 Cartilage repair score according to Wakitani et al. [31]
Parameters | Score |
|---|---|
Cell morphology | |
 Hyaline cartilage | 0 |
 Mostly hyaline cartilage | 1 |
 Mostly fibrocartilage | 2 |
 Mostly noncartilage | 3 |
 Noncartilage only | 4 |
Matrix staining | |
 Normal (compared with host adjacent cartilage) | 0 |
 Slightly reduced | 1 |
 Markedly reduced | 2 |
 No metachromatic stain | 3 |
Surface regularity (total smooth area compared with entire area of cartilage defect) | |
 Smooth (>3/4) | 0 |
 Moderate (>1/2–3/4) | 1 |
 Irregular (1/4–1/2) | 2 |
 Severely irregular (<1/4) | 3 |
Thickness of cartilage (compared with that of surrounding cartilage) | |
  > 2/3 | 0 |
 1/3–2/3 | 1 |
  < 1/3 | 2 |
Integration of donor with host adjacent cartilage | |
 Both edges integrated | 0 |
 One end integrated | 1 |
 Neither edge integrated | 2 |