TY - JOUR T1 - Knee-straining work activities, self-reported knee disorders and radiographically determined knee osteoarthritis JO - Scandinavian Journal of Work, Environment & Health PY - 2005/VL - 31 IS - 2 SP - 68 EP - 74 AU - Kirkeskov Jensen, Lilli UR - https://www.sjweh.fi/show_abstract.php?abstract_id=963 KW - carpenter KW - dose–response relationship KW - floor layer KW - knee complaint KW - knee osteoarthritis KW - knee osteoarthrosis KW - knee strain KW - knee stress KW - knee-straining work activity KW - kneeling KW - radiography KW - self-assessment KW - self-report KW - self-reported knee disorder KW - squatting N2 - '

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OBJECTIVES ': 'Earlier studies indicate an increased risk of knee disorders in trades with knee-straining work positions, but no dose–response correlation has yet been documented. This study examined whether self-reported knee complaints and radiologically diagnosed knee osteoarthritis are dose-related to kneeling and squatting work positions.

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METHODS ': 'Worktasks for floor layers and carpenters were video-recorded, and the time spent in knee-straining work positions was quantified. A questionnaire study included 133 floor layers, 506 carpenters, and 327 compositors, all without earlier acute knee trauma. Radiological examinations were carried out on a stratified sample (N=150) from the questionnaire study. The individual exposure was calculated from the amount of knee strain quantified in the video-recorded worktasks, the self-reported time spent in the worktask, and the number of years in the trade. Statistical analyses were carried out with a binary logistic regression model, adjusting for age, body mass index, smoking, and knee-straining sports activities.

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RESULTS ': 'The odds ratios for self-reported knee complaints and radiographically determined knee osteoarthritis were increased in relation to the degree of knee-straining work demands for workers with low-to-moderate, high, and very high exposure to knee-straining work demands in a comparison with the reference group, without knee-stressing work activities.

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CONCLUSIONS ': 'The results indicate that there is a dose–response correlation between knee-straining work activities and the development of self-reported knee complaints and radiologically diagnosed knee osteoarthritis.

SN - 0355-3140 ER -