From: Inflammatory pattern of the infrapatellar fat pad in dogs with canine cruciate ligament disease
Grade | ||||
---|---|---|---|---|
Structure | 0 (normal) | 1 (mild) | 2 (moderate) | 3 (severe) |
Synovitisa | Thin synovial membrane with thin scattered vessels | Isolated thickening of synovial membrane with granulations and small vessels | Synovial membrane with abundant villous projections and large vessels | Synovial membrane with large villi and abundant vasculature |
Osteophytesb | none | solitary | multiple | confluent |
Medial meniscus | normal | Fibrillated surface | Undisplaced tear | Displaced tear |
Articular cartilage lesionsc | none | Solitary fibrillation | Multiple areas of fibrillation up to solitary erosion | Multiple erosions to the level of subchondral bone |