0 | Normal |
1 | Doubtful joint space narrowing, possible osteophytes |
2 | Possible joint space narrowing, definite osteophytes |
3 | Definite joint space narrowing, multiple osteophytes, some sclerosis, possible deformity of bone ends |
4 | Marked joint space narrowing, large osteophytes, severe sclerosis, definite deformity of bone ends |