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Mankin Structural Damage Scoring Criteria used in the Automated Program
| Cartilage structure |
Cleft depth
(% cartilage thickness) |
HHGS structural score |
|---|---|---|
|
| ||
| Normal | Less than 5% | 0 |
| Surface irregularities | 5% to 15% | 1 |
| Pannus | Disregarded | n/a for osteoarthritis |
| Cleft to transitional zone | 15% to 45% | 3 |
| Cleft to radial zone | 45% to 65% | 4 |
| Cleft to calcified zone | above 65% | 5 |
| Eburnation | No cartilage present | 6 |
