Table 2.

Scoring systems for abnormalities of the menisci, the ligaments, and the cartilage

Meniscus
Grade 0	Normal
Grade 1	No definite tear but focal edema
Grade 2	Tear with extension to one surface
Grade 3	Tear with penetrating high signal
Ligament
Grade 0	Normal
Grade 1	Edema less than 50% thickness of the ligament
Grade 2	Edema more than 50% thickness of the ligament
Grade 3	Evident discontinuity of the ligament
Cartilage
Grade 0	Normal
Grade 1	Superficial lesion, crack and indentation
Grade 2	Fraying, lesions extending less than 50% thickness of the cartilage
Grade 3	Partial loss of cartilage thickness of more than 50%
Grade 4	Complete loss of the cartilage thickness