title: Radiographic assessment of the knee joint in osteoarthritis.
abstract: The development of radiographic systems for the grading of osteoarthritis requires knowledge of the reproducibility of their individual component features. This paper reports the reproducibility, both within and between observers, for five commonly used radiographic features of osteoarthritis in the tibiofemoral and patellofemoral compartments of the knee joint. The results suggest that assessments of joint space narrowing, osteophyte, and bony contour in the tibiofemoral compartments are more reproducible than those of sclerosis and cyst. Patellofemoral assessments, with the exception of osteophyte, are considerably less reproducible between observers than tibiofemoral assessments.
authors.affiliation: Department of Medicine, Bristol Royal Infirmary, United Kingdom.
authors.forename: C
authors.initials: C
authors.lastname: Cooper
authors.forename: J
authors.initials: J
authors.lastname: Cushnaghan
authors.forename: J R
authors.initials: JR
authors.lastname: Kirwan
authors.forename: P A
authors.initials: PA
authors.lastname: Dieppe
authors.forename: J
authors.initials: J
authors.lastname: Rogers
authors.forename: T
authors.initials: T
authors.lastname: McAlindon
authors.forename: F
authors.initials: F
authors.lastname: McCrae
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging*; D008297:Male; D015588:Observer Variation; D010003:Osteoarthritis / Q000000981:diagnostic imaging*; D011859:Radiography; D015203:Reproducibility of Results