Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015

Objective: This study aimed to clarify the trends in the prevalence of knee osteoarthritis (OA) and symptomatic knee OA among the general population using population-based cohort data from baseline and a survey 10 years later. Design: The baseline survey of the Research on Osteoarthritis/Osteoporosi...

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Main Authors: Gaku Tanegashima, Toshiko Iidaka, Shigeyuki Muraki, Chiaki Horii, Hiroyuki Oka, Hiroshi Kawaguchi, Kozo Nakamura, Toru Akune, Sakae Tanaka, Noriko Yoshimura
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Osteoarthritis and Cartilage Open
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Online Access:http://www.sciencedirect.com/science/article/pii/S2665913125000056
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author Gaku Tanegashima
Toshiko Iidaka
Shigeyuki Muraki
Chiaki Horii
Hiroyuki Oka
Hiroshi Kawaguchi
Kozo Nakamura
Toru Akune
Sakae Tanaka
Noriko Yoshimura
author_facet Gaku Tanegashima
Toshiko Iidaka
Shigeyuki Muraki
Chiaki Horii
Hiroyuki Oka
Hiroshi Kawaguchi
Kozo Nakamura
Toru Akune
Sakae Tanaka
Noriko Yoshimura
author_sort Gaku Tanegashima
collection DOAJ
description Objective: This study aimed to clarify the trends in the prevalence of knee osteoarthritis (OA) and symptomatic knee OA among the general population using population-based cohort data from baseline and a survey 10 years later. Design: The baseline survey of the Research on Osteoarthritis/Osteoporosis Against Disability (ROAD) study was conducted from 2005 to 2007; 3040 participants (1061 men and 1979 women; mean age 70.3 years) completed all OA examinations, including a questionnaire of medical information in the present/past and radiographic examination. The fourth survey was performed from 2015 to 2016; 2893 individuals (895 men and 1998 women, mean age 68.9 years) completed assessments identical to those at the baseline survey. Knee OA was defined using the Kellgren–Lawrence grading system. Results: The prevalence of knee OA was 54.6 ​% (men, 42.0 ​%; women, 61.5 ​%) at the baseline survey and 39.3 ​% (men, 26.9 ​%; women, 44.9 ​%) at the fourth survey, with a significant decrease (p ​< ​0.0001). The prevalence of symptomatic knee OA was 24.3 ​% (men, 16.9 ​%; women, 28.3 ​%) at the baseline survey and 20.6 ​% (men, 14.2 ​%; women, 23.5 ​%) at the fourth survey, showing a similar decrease (p ​< ​0.0001). Thus, the prevalence of knee OA and symptomatic knee OA was lower at the fourth survey than at the baseline survey (p ​< ​0.01). Conclusions: In the population-based survey with a 10-year interval, the prevalence of knee OA and symptomatic knee OA decreased significantly. This preferable change in OA may suggest rejuvenation in the current population and could contribute to a decrease in the occurrence of disabilities in the future.
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spelling doaj-art-0c7a56fd87ca4a08b42c0964435cb4b92025-08-20T02:55:32ZengElsevierOsteoarthritis and Cartilage Open2665-91312025-03-017110056910.1016/j.ocarto.2025.100569Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015Gaku Tanegashima0Toshiko Iidaka1Shigeyuki Muraki2Chiaki Horii3Hiroyuki Oka4Hiroshi Kawaguchi5Kozo Nakamura6Toru Akune7Sakae Tanaka8Noriko Yoshimura9Department of Orthopaedic Surgery, Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, JapanDepartment of Prevention Medicine for Locomotive Organ Disorders, 22nd Century Medical and Research Center, The University of Tokyo, Tokyo, 113-8655, JapanDepartment of Prevention Medicine for Locomotive Organ Disorders, 22nd Century Medical and Research Center, The University of Tokyo, Tokyo, 113-8655, JapanDepartment of Orthopaedic Surgery, Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, JapanDivision of Musculoskeletal AI System Development, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, JapanNadogaya Hospital, Chiba, 277-0084, JapanTowa Hospital, Tokyo, 120-0003, JapanNational Rehabilitation Center for Persons with Disabilities, Saitama, 359-0042, JapanDepartment of Orthopaedic Surgery, Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, JapanDepartment of Prevention Medicine for Locomotive Organ Disorders, 22nd Century Medical and Research Center, The University of Tokyo, Tokyo, 113-8655, Japan; Corresponding author.Objective: This study aimed to clarify the trends in the prevalence of knee osteoarthritis (OA) and symptomatic knee OA among the general population using population-based cohort data from baseline and a survey 10 years later. Design: The baseline survey of the Research on Osteoarthritis/Osteoporosis Against Disability (ROAD) study was conducted from 2005 to 2007; 3040 participants (1061 men and 1979 women; mean age 70.3 years) completed all OA examinations, including a questionnaire of medical information in the present/past and radiographic examination. The fourth survey was performed from 2015 to 2016; 2893 individuals (895 men and 1998 women, mean age 68.9 years) completed assessments identical to those at the baseline survey. Knee OA was defined using the Kellgren–Lawrence grading system. Results: The prevalence of knee OA was 54.6 ​% (men, 42.0 ​%; women, 61.5 ​%) at the baseline survey and 39.3 ​% (men, 26.9 ​%; women, 44.9 ​%) at the fourth survey, with a significant decrease (p ​< ​0.0001). The prevalence of symptomatic knee OA was 24.3 ​% (men, 16.9 ​%; women, 28.3 ​%) at the baseline survey and 20.6 ​% (men, 14.2 ​%; women, 23.5 ​%) at the fourth survey, showing a similar decrease (p ​< ​0.0001). Thus, the prevalence of knee OA and symptomatic knee OA was lower at the fourth survey than at the baseline survey (p ​< ​0.01). Conclusions: In the population-based survey with a 10-year interval, the prevalence of knee OA and symptomatic knee OA decreased significantly. This preferable change in OA may suggest rejuvenation in the current population and could contribute to a decrease in the occurrence of disabilities in the future.http://www.sciencedirect.com/science/article/pii/S2665913125000056OsteoarthritisKneePrevalenceCohort study
spellingShingle Gaku Tanegashima
Toshiko Iidaka
Shigeyuki Muraki
Chiaki Horii
Hiroyuki Oka
Hiroshi Kawaguchi
Kozo Nakamura
Toru Akune
Sakae Tanaka
Noriko Yoshimura
Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
Osteoarthritis and Cartilage Open
Osteoarthritis
Knee
Prevalence
Cohort study
title Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
title_full Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
title_fullStr Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
title_full_unstemmed Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
title_short Trends in knee osteoarthritis prevalence over a 10-year period in Japan: The ROAD study 2005–2015
title_sort trends in knee osteoarthritis prevalence over a 10 year period in japan the road study 2005 2015
topic Osteoarthritis
Knee
Prevalence
Cohort study
url http://www.sciencedirect.com/science/article/pii/S2665913125000056
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