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

IF 2.8
Gaku Tanegashima , Toshiko Iidaka , Shigeyuki Muraki , Chiaki Horii , Hiroyuki Oka , Hiroshi Kawaguchi , Kozo Nakamura , Toru Akune , Sakae Tanaka , Noriko Yoshimura
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Abstract

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.
日本10年期间膝关节骨关节炎患病率趋势:ROAD研究2005-2015
目的:本研究旨在利用基线和10年后调查的基于人群的队列数据,阐明普通人群中膝关节骨关节炎(OA)和症状性膝关节OA的患病率趋势。设计2005 - 2007年进行骨关节炎/骨质疏松症抗残疾研究(ROAD)的基线调查;3040名参与者(1061名男性和1979名女性;平均年龄70.3岁)完成了所有OA检查,包括现在/过去的医疗信息问卷和放射检查。第四次调查于2015年至2016年进行;2893人(895名男性和1998名女性,平均年龄68.9岁)完成了与基线调查相同的评估。膝关节OA的定义采用Kellgren-Lawrence分级系统。结果膝关节OA患病率为54.6%(男性为42.0%;女性,61.5%)和39.3%(男性,26.9%;在第四次调查中,女性占44.9%,有显著下降(p <;0.0001)。症状性膝关节炎患病率为24.3%(男性为16.9%;女性,28.3%)和20.6%(男性,14.2%;在第四次调查中,女性占23.5%,显示出类似的下降(p <;0.0001)。因此,在第四次调查时,膝关节OA和症状性膝关节OA的患病率低于基线调查时(p <;0.01)。结论在为期10年的人群调查中,膝关节OA和症状性膝关节OA的患病率明显下降。OA的这种良好变化可能表明当前人群的年轻化,并可能有助于减少未来残疾的发生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Osteoarthritis and cartilage open
Osteoarthritis and cartilage open Orthopedics, Sports Medicine and Rehabilitation
CiteScore
3.30
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