RT Journal Article SR Electronic T1 Radiological Assessment of Osteo-Arthrosis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 494 OP 502 DO 10.1136/ard.16.4.494 VO 16 IS 4 A1 Kellgren, J. H. A1 Lawrence, J. S. YR 1957 UL http://ard.bmj.com/content/16/4/494.abstract AB