Table 1 Kellgren and Lawrence classification system[40]
Grade | Description |
|---|---|
0 | No changes |
1 | Doubtful narrowing of joint space and possible osteophytic lipping |
2 | Definite osteophytes and possible narrowing of joint space |
3 | Moderate multiple osteophytes, definite narrowing of joint space, and some sclerosis, and possible deformity of bone ends |
4 | Large osteophytes, marked narrowing of joint space, severe sclerosis and definite deformity of bone ends |