Kellgren–Lawrence grading scale
The Kellgren–Lawrence grade (or K-L system) is a scoring tool used to assess the severity of knee osteoarthritis on a plain radiograph.[1] It was first proposed in 1957 by Drs. J.H. Kellgren and J.S. Lawrence.[2]
Scale
| Grade | Description |
|---|---|
| 0 | No radiographic features of osteoarthritis |
| 1 | Possible joint space narrowing and osteophyte formation |
| 2 | Definite osteophyte formation with possible joint space narrowing |
| 3 | Multiple osteophytes, definite joint space narrowing, sclerosis and possible bony deformity |
| 4 | Large osteophytes, marked joint space narrowing, severe sclerosis and definite bony deformity |
References
- ↑ Emrani, P. S.; Katz, J. N.; Kessler, C. L.; Reichmann, W. M.; Wright, E. A.; McAlindon, T. E.; Losina, E (2008). "Joint space narrowing and Kellgren-Lawrence progression in knee osteoarthritis: An analytic literature synthesis". Osteoarthritis and Cartilage. 16 (8): 873–82. doi:10.1016/j.joca.2007.12.004. PMC 2701468
. PMID 18280757. - ↑ Kellgren, J. H.; Lawrence, J. S. (1957). "Radiological assessment of osteo-arthrosis". Annals of the rheumatic diseases. 16 (4): 494–502. PMC 1006995. PMID 13498604.
See also
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