Journal
OSTEOARTHRITIS AND CARTILAGE
Volume 17, Issue 9, Pages 1137-1143Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.joca.2009.04.005
Keywords
Osteoarthritis; Knee; Prevalence; Pain; Cross-sectional
Categories
Funding
- Japanese Ministry of Education, Culture, Sports, Science and Technology [A18689031]
- Ministry of Health, Labour and Welfare [H17-Meneki-009]
- Japanese Orthopaedic Association
Ask authors/readers for more resources
Objective: We investigated the prevalence of radiographic knee osteoarthritis (OA) and knee pain in the Japanese elderly using a large-scale population of a nationwide cohort study, Research on Osteoarthritis Against Disability (ROAD), and examined their association. Methods: From the baseline survey of the ROAD study, 2,282 participants >= 60 years (817 men and 1,465 women) living in urban, mountainous and seacoast communities were analyzed. The radiographic severity at both knees was determined by the Kellgren/Lawrence (KL) grading system. KL >= 2 and KL >= 3 knee CA were examined separately to assess osteophytosis and joint space narrowing (JSN). Results: The prevalence of KL >= 2 OA (47.0% and 70.2% in men and women, respectively) was much higher than that of previous studies in Caucasians, while that of KL >= 3 OA was not much different in men. Age, BMI, female sex and rural residency were risk factors for radiographic knee OA, knee pain and their combination. The prevalence of knee pain was age-dependent in women, but not in men. Knee pain was more strongly associated with KL >= 3 OA than with KL = 2, and the association was higher in men than in women. Female sex was a strong risk factor even in the subgroup without radiographic knee CA (KL = 0/1). Conclusion: The present cross-sectional study revealed a high prevalence of radiographic knee CA in the Japanese elderly. Knee pain was strongly associated with JSN especially in men, while women tended to have knee pain even without radiographic OA. (C) 2009 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available