Kellgren and Lawrence developed a grading system for the radiological appearance of a joint with osteoarthritis. The authors are from the University of Manchester and the Empire Rheumatism Council Field Unit.
|
Radiological Appearance of Osteoarthritis |
Grade |
|
normal (no signs of osteoarthritis) |
0 |
|
doubtful change (uncertain) |
1 |
|
definite, minimal to mild |
2 |
|
definite, moderate |
3 |
|
definite, severe |
4 |
If more than one joint in a group is assessed, then the most severe grade is reported.
Parameters:
(1) osteophytes at the joint margins and periarticular ossicles
(2) narrowing of the joint space
(3) cystic areas with sclerotic walls in subchondral bone
(4) deformity of bone (altered shape)
|
Osteophytes and Ossicles |
Narrowing |
Sclerosis |
Deformity |
Grade |
|
none |
none |
none |
none |
0 |
|
possible |
possible |
none |
none |
1 |
|
definite |
mild |
possible |
none |
2 |
|
moderate, multiple |
moderate |
some |
possible |
3 |
|
large |
marked |
severe |
definite |
4 |
Specialty: Surgery, orthopedic, Immunology/Rheumatology
ICD-10: ,
