Now and then
Development of a logically devised line drawing atlas for grading
of knee osteoarthritis
Yoshihiro Nagaosa, Margarida Mateus, Batool Hassan, Peter Lanyon, Michael Doherty
Academic
Rheumatology, University of Nottingham, Clinical Sciences Building,
City Hospital, Nottingham NG5 1PB, UK
Correspondence to: Professor Doherty Email: Michael.Doherty{at}Nottingham.ac.uk
Accepted for publication 15 February 2000
OBJECTIVES
To
(a) develop an atlas of line drawings for
the assessment and grading of narrowing and osteophyte (that is,
changes of osteoarthritis) on knee radiographs, and
(b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs.
METHODSNormal
joint space widths (grade 0) for the medial and lateral
tibiofemoral and medial and lateral patellofemoral compartments were obtained from a previous community study. Grades 1-3 narrowing in
each compartment was calculated separately for men and women, grade 3 being bone on bone, grades 1 and 2 being two thirds and one third the
value of grade 0. Maximum osteophyte size (grade 3) for each of eight
sites was determined from 715 bilateral knee x ray films obtained in a knee
osteoarthritis (OA) hospital clinic; grades 1-2 were calculated as two
thirds and one third reductions in the area of grade 3. Drawings for
narrowing and osteophyte were presented separately. 50 sets of
bilateral knee x ray radiographs (standing,
extended anteroposterior; flexed skyline) showing a spectrum of OA
grades were scored by three observers, twice using the OARS atlas and
twice using the drawn atlas.
RESULTSIntraobserver
and interobserver reproducibility was similar and generally good with
both atlases, though varied according to site. All three observers
preferred the line drawing atlas for ease and convenience of use.
Higher scores for patellofemoral narrowing and lower scores for
osteophyte, especially medial femoral osteophyte, were seen using the
line drawing atlas, showing that the two atlases are not equivalent instruments.
CONCLUSIONA logically
derived line drawing atlas for grading of narrowing and osteophyte at
the knee has been produced. The atlas showed comparable reproducibility
with the OARS atlas, but was discordant in several aspects of grading.
Such a system has several theoretical and practical advantages and
should be considered for use in knee OA studies.
© 2000 by Annals of the Rheumatic Diseases
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
This article has been cited by other articles:
-
Jenkinson, C. M, Doherty, M., Avery, A. J, Read, A., Taylor, M. A, Sach, T. H, Silcocks, P., Muir, K. R
(2009). Effects of dietary intervention and quadriceps strengthening exercises on pain and function in overweight people with knee pain: randomised controlled trial. BMJ
339: b3170-b3170
[Abstract] [Full Text] -
Kumm, J., Tamm, A., Veske, K., Lintrop, M., Tamm, A.
(2006). Associations between cartilage oligomeric matrix protein and several articular tissues in early knee joint osteoarthritis. Rheumatology (Oxford)
45: 1308-1309
[Full Text] -
Wilkinson, C E, Carr, A J, Doherty, M
(2005). Does increasing the grades of the knee osteoarthritis line drawing atlas alter its clinimetric properties?. Ann Rheum Dis
64: 1467-1473
[Abstract] [Full Text] -
Neame, R L, Muir, K, Doherty, S, Doherty, M
(2004). Genetic risk of knee osteoarthritis: a sibling study. Ann Rheum Dis
63: 1022-1027
[Abstract] [Full Text] -
Neame, R L, Carr, A J, Muir, K, Doherty, M
(2003). UK community prevalence of knee chondrocalcinosis: evidence that correlation with osteoarthritis is through a shared association with osteophyte. Ann Rheum Dis
62: 513-518
[Abstract] [Full Text] -
Nagaosa, Y, Lanyon, P, Doherty, M
(2002). Characterisation of size and direction of osteophyte in knee osteoarthritis: a radiographic study. Ann Rheum Dis
61: 319-324
[Abstract] [Full Text]
- Full Text
- Full Text (PDF)
- Submit a response
- Alert me when this article is cited
- Alert me when eLetters are posted
- Alert me if a correction is posted
- Citation Map
Services
- Email this link to a friend
- Similar articles in this journal
- Similar articles in PubMed
- Add article to my folders
- Download to citation manager
- Request Permissions
Citing Articles
Google Scholar
PubMed
Topic Collections
-
Clinical diagnostic tests
-
Radiology (diagnostics)
-
Radiology
-
Degenerative joint disease
-
Musculoskeletal syndromes
Bookmark with
Register for free content
The full back archive is now available for all BMJ Journals. Institutional subscribers may access the entire archive as part of their subscription. Personal subscribers will also have access to all content when logged in. Non-subscribers who register have free access to all articles published before 2006 right back to volume 1 issue 1. Register here to access the free archive of all BMJ Journals.
Don't forget to sign up for content alerts so you keep up to date with all the articles as they are published.
