RT Journal Article SR Electronic T1 Knee Effusion in Young Adults as an Early Sign of Degenerative Arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 347 OP 352 DO 10.1136/ard.10.3.347 VO 10 IS 3 A1 R. W. Parnell YR 1951 UL http://ard.bmj.com/content/10/3/347.abstract AB