| Scores | |
---|---|---|
Grade | OARSI [39] | AHO [41] |
0 | Â | No evident subchondral bone sclerosis, articular cartilage directly connected to the bone |
1 | Cartilage surface intact | Some subchondral sclerosis, bone volume increased, cartilage contact with the bone marrow |
2 | Cartilage surface discontinuity | Distinct increase in subchondral sclerosis and bone volume, fibrillation in subchondral bone, no contact of the bone marrow to the articular cartilage |
3 | Vertical fissures within the cartilage | Late-stage disease, severe subchondral sclerosis and massively increased bone volume, bone marrow distance from the cartilage increases |
4 | Erosion | Â |
5 | Denudation | Â |
6 | Deformation | Â |