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Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint
Published on: July 22, 2021
Association between cumulative joint loading from occupational activities and knee osteoarthritis
Allison M Ezzat1, Jolanda Cibere, Mieke Koehoorn
1School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada.
Arthritis Care & Research
|April 24, 2013
Summary
High cumulative occupational physical load (COPL) is linked to increased knee osteoarthritis (OA) risk. Dose-response relationships were observed for symptomatic OA and MRI-defined OA, highlighting the impact of physical work on knee health.
Area of Science:
- Occupational health
- Rheumatology
- Biomedical engineering
Background:
- Knee osteoarthritis (OA) is a significant cause of disability.
- Occupational physical load is a potential risk factor for knee OA.
- Understanding the relationship between physical work and knee OA is crucial for prevention strategies.
Purpose of the Study:
- To investigate the association between cumulative occupational physical load (COPL) and knee osteoarthritis (OA).
- To examine this association across three different definitions of knee OA: radiographic OA (ROA), symptomatic OA (SOA), and MRI-defined OA.
Main Methods:
- Cross-sectional analysis of two population-based cohorts (n=327).
- Self-reported COPL was calculated and categorized into quarters.
- Knee OA was defined using Kellgren/Lawrence grades for ROA and SOA, and MRI criteria for MRI-OA.
- Logistic regression models adjusted for population weights were used to assess associations.
Main Results:
- Higher quartiles of COPL were associated with increased odds of ROA.
- Significant dose-response relationships were found between higher COPL quartiles and increased odds of SOA and MRI-OA.
- For example, the highest COPL quartile (QCOPL-4) showed substantially elevated odds ratios for SOA and MRI-OA compared to the lowest quartile (QCOPL-1).
Conclusions:
- Occupational physical activity is significantly associated with knee OA.
- A clear dose-response relationship exists between cumulative occupational physical load and symptomatic and MRI-defined knee OA.
- These findings underscore the importance of considering occupational factors in the etiology and prevention of knee OA.
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