Subchondral tibial bone mineral density predicts future joint space narrowing at the medial femoro-tibial compartment in patients with knee osteoarthritis
Subchondral tibial bone mineral density predicts future joint space narrowing at the medial femoro-tibial compartment in patients with knee osteoarthritis.pdf
osteoarthritis; knee; X-rays; structure; bone mineral density
Abstract :
[en] Preliminary studies have shown that dual-energy X-ray absorptiometry (DXA) produces images of sufficient quality for a precise and accurate measurement at density of the subchondral bone. The objective of this study was to investigate the relationship between baseline subchondral tibial bone mineral density (BMD) and joint space narrowing observed after 1 year at the medial femoro-tibial compartment of the knee joint. Fifty-six consecutive patients, from both genders, with knee osteoarthritis diagnosed according to the American College of Rheumatology criteria, were included in the study. Radiographic posteroanterior views were taken, at baseline and after 1 year of follow-up. Minimum joint space width (JSW) measurement, at the medial femoro-tibial joint, was performed with a 0.1-mm graduated magnifying lens. Baseline BMD of the subchondral tibial bone was assessed by DXA. The mean +/- SD age of the patients was 65.3 +/- 8.7 years, with a body mass index of 28.0 +/- 4.9 kg/m(2). The minimum JSW was 3.5 +/- 1.5 mm and the mean BMD of the subchondral bone was 0.848 +/- 0.173 g/cm(2). There was a significant negative correlation between subchondral BMD and 1-year changes in minimum JSW (r = -0.43, p = 0.02). When performing a multiple regression analysis with age, sex, body mass index, and minimum JSW at baseline as concomitant variables, BMD of the subchondral bone as well as JSW at baseline were independent predictors of 1-year changes in JSW (p = 0.02 and p = 0.005, respectively). Patients in the lowest quartile of baseline BMD (<0.73 g/cm(2)) experienced less joint space narrowing than those in the highest BMD quartile (>0.96 g/cm(2)) (+0.61 +/- 0.69 turn versus -0.13 +/- 0.27 mm; p = 0.03). Assessment of BMD of the subchondral tibial bone is significantly correlated with future joint space narrowing and could be used as a predictor of knee osteoarthritis progression. (C) 2003 Elsevier Science (USA). All rights reserved.
Disciplines :
Endocrinology, metabolism & nutrition
Author, co-author :
Bruyère, Olivier ; Université de Liège - ULiège > Département des sciences de la santé publique > Epidémiologie et santé publique
Lejeune, Eric ; Université de Liège - ULiège > Département des sciences de la santé publique > Santé publique, Epidémiologie et Economie de la santé
Zegels, Brigitte ; Université de Liège - ULiège > Département des sciences de la santé publique > Epidémiologie et santé publique
Pahaut, Aurore ; Centre Hospitalier Universitaire de Liège - CHU > Médecine de l'appareil locomoteur
Richy, Florent
Seidel, Laurence ; Université de Liège - ULiège > Département des sciences de la santé publique > Informatique médicale et biostatistique
Ethgen, Olivier ; Université de Liège - ULiège > Département des sciences de la santé publique > Santé publique : aspects spécifiques
Henrotin, Yves ; Université de Liège - ULiège > Unité de recherche sur l'os et le cartillage (U.R.O.C.)
Reginster, Jean-Yves ; Université de Liège - ULiège > Département des sciences de la santé publique > Epidémiologie et santé publique
Language :
English
Title :
Subchondral tibial bone mineral density predicts future joint space narrowing at the medial femoro-tibial compartment in patients with knee osteoarthritis
Publication date :
May 2003
Journal title :
BONE
ISSN :
8756-3282
eISSN :
1873-2763
Publisher :
Elsevier Science Inc, New York, United States - New York
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