Kellgren and Lawrence scores for osteoarthritis of the knee and the hip.
Grade | Knee | Hip |
---|---|---|
0 | ||
No osteoarthritis | No features of osteoarthritis | No features of osteoarthritis |
1 | ||
Doubtful | Doubtful narrowing of joint space and possible osteophytic lipping | Possible narrowing of joint space medially and possible osteophytes around the femoral head; or osteophytes alone |
2 | ||
Mild | Definite osteophytes and possible narrowing of joint space | Definite narrowing of joint space inferiorly, definite osteophytes and slight sclerosis |
3 | ||
Moderate | Moderate multiple osteophytes, definite narrowing of joint space and some sclerosis and possible deformity of bone ends | Marked narrowing of joint space, definite osteophytes, some sclerosis and cyst formation, and deformity of the femoral head and acetabulum |
4 | ||
Severe | Large osteophytes, marked narrowing of joint space, severe sclerosis and definite deformity of bone ends | Gross loss of joint space with sclerosis and cysts, marked deformity of femoral head and acetabulum and large osteophytes |