Table 2 Outerbridge score for macroscopic degenerative change[17]
Outerbridge score | Explanation |
|---|---|
Grade 0 | Normal |
Grade I | Mild softening of the articular cartilage |
Grade II | Fibrillation and fissuring of chondral surface |
Grade III | Cracks in articular cartilage, no subchondral bone exposed |
Grade IV | Full thickness chondral defects down to bone |