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Work-related factors of knee osteoarthritis in Korean farmers: a cross-sectional study

송한수, 김동휘, 이광철, 김권영, 류소연, 이철갑,
소속 상세정보
송한수 ( Song Han-Soo ) - Chosun University Hospital Department of Occupational and Environmental Medicine
김동휘 ( Kim Dong-Hwi ) - Chosun University Hospital Department of Orthopedic Medicine
이광철 ( Lee Gwang-Chul ) - Chosun University Hospital Department of Orthopedic Medicine
김권영 ( Kim Kweon-Young ) - Chosun University Hospital Department of Rehabilitation Medicine
류소연 ( Ryu So-Yeon ) - Chosun University Hospital Department of Preventive Medicine
이철갑 ( Lee Chul-Gab ) - Chosun University Hospital Department of Occupational and Environmental Medicine

Abstract


Background: Several studies have reported a high prevalence of osteoarthritis (OA) of the knee among agricultural workers. We investigated work-related factors that increase the risk of knee OA among Korean farmers.

Methods: Data were extracted from the Jeonnam Center for Farmer's Safety and Health survey, conducted between 2013 and 2015. The sample included 489 farmers (man 240, woman 249). We defined knee OA as radiographic knee OA (≥ Kellgren-Lawrence grade 2) with symptoms (≥ Western Ontario and McMaster Universities Osteoarthritis, Korean version score 29.5). We considered covariates such as cumulative squatting working time (CSWT), cumulative heavy lifting working time (CLWT), body mass index (BMI), and history of knee injury. Odds ratios (ORs) and their corresponding 95% confidence intervals (CIs) were calculated for knee OA and adjusted for relevant covariates.

Results: The results of multivariate logistic regression analysis indicated that knee OA was correlated by factors such as sex, age, BMI, history of knee injury, CSWT, and CLWT. Particularly, CSWT > 20,000 hours (OR: 2.83; 95% CI: 1.35?5.92; reference < 10,000 hours) and CLWT > 5,000 hours (OR: 2.62; 95% CI: 1.14?6.06; reference < 2,000 hours) were associated with an increased risk of knee OA after adjustment for covariates.

Conclusions: Squatting posture and heavy lifting associated with farm work might increase the risk of knee OA among Korean farmers.

키워드

Knee; Osteoarthritis; Farmers; Korea; Agriculture; Occupations

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