농업인 무릎골관절염의 농작업관련 위험요인

Abstract

Objectives: To determine the associations between work-related factors and knee osteoarthritis(OA) in Korea farmers.

Method: Cross-sectional studies were performed from Korean Farmer Knee Cohort of Chonnam-farmer’s safety and health center. Objectives are 436 farmers (male 207, female 229). We measured radiographic (≥Kellgrene-Lawrence grade 2), symptomatic (≥K-WOMAC score 29.5), knee OA combined radiographic and symptomatic OA, osteoporosis, cumulative squatting time, cumulative lifting time, socioeconomic status, menopause, delivery history, family history of severe knee OA, smoking, alcohol consumption, leisure time physical activity by knee radiographics, bone mineral density. We identified adjusted odds ratio of combined knee osteoarthritis by related factors.

Results: Prevalence of knee OA was 67.4% in radiographic OA and 27.8% in symptomactic OA, 21.6% in OA (male 10.6%, female 31.4%). Adjusted Odds ratios showed significantly higher risk of knee OA in gender, age, a level of education, body mass index, cumulated squatting time. cumulative lifting time. Adjusted odds ratios (ORs) of knee OA for female were 3.07 (95% CI 1.66∼5.68). Adjusted ORs for 55∼64 years and ≥65 years 1.52 (95% CI 0.69∼3.36), 3.31 (95% CI 1.35∼8.13). Adjusted ORs for middle school and elementary school were 4.26 (95% CI 1.70∼10.65), 1.87 (95% CI 0.77∼4.51). Adjusted ORs for overweight (BMI 25∼29.9) and obesity (BMI ≥30) were 1.34 (95% CI 0.74∼2.40), 2.47 (95% CI 0.87∼7.03). Adjusted ORs for ‘2,000∼4,999 hours’ and ‘≥5,000 hours’ exposure group of cumulative lifting time were 2.24 (95% CI 1.11∼4.56), 1.12 (95% CI 0.55∼2.28). Adjusted ORs for ‘10,000∼19,999 hours’ and ‘≥20,000 hours’ exposure group of cumulative squatting time were 2.24 (95% CI 1.11∼4.56), 1.12 (95% CI 0.55∼2.28).

Conclusion: Long period squatting posture and lifting task significantly related with symptomatic OA and knee OA in farmers.

keyword: work-related factors, knee, osteoarthritis, farmer