Table 1 Worms cartilage score

0

Indicates normal cartilage

1

Increased signal with fluid sensitive intermediate-weighted sequences

2

Partial thickness defect less than 1 cm in greatest width

2.5

Full-thickness defect less than 1 cm in greatest width

3

Multiple areas of partial thickness (grade2) defects intermixed with areas of normal thickness or a partial thickness defect wider than 1 cm but less than 75% of the region

4

Diffuse (> 75% of the region) partial thickness loss

5

Multiple areas of full thickness loss (grade 2.5) or a full thickness defect wider than 1 cm but less than 75% of the region

6

Diffuse (≥ 75% of the region) full thickness loss