Grade | Radiologic Findings |
0 | No radiological findings of osteoarthritis |
I | Doubtful narrowing of joint space and possible osteophytic lipping |
II | Definite osteophytes and possible narrowing of joint space |
III | Moderate multiple osteophytes, definite narrowing of joint space, small pseudocystic areas with sclerotic walls and possible deformity of bone contour |
IV | Large osteophytes, marked narrowing of joint space, severe sclerosis and definite deformity of bone contour |