We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDefining radiographic incidence and progression of knee osteoarthritis: suggested modifications of the Kellgren and Lawrence scaleAuthorsFelson, D. T.; Niu, J.; Guermazi, A.; Sack, B.; Aliabadi, P.PublicationAnnals of the Rheumatic Diseases, 2011, Vol 70, Issue 11, p1884ISSN0003-4967Publication typearticleDOI10.1136/ard.2011.155119