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Beck classification of cartilage damage
| Beck classification of cartilage damage | ||
|---|---|---|
| Grade | Description | Criteria |
| 0 | Normal | Macroscopically sound cartilage |
| 1 | Malacia | Roughening of surface, fibrillation |
| 2 | Debonding | Loss of fixation to subchondral bone, macroscopically sound cartilage; carpet phenomenon |
| 3 | Cleavage | Loss of fixation to subchondral bone, frayed edge, thinning of the cartilage, flap |
| 4 | Defect | Full-thickness defect |
