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Influence of severe knee pain, meniscus surgery and knee arthroplasty on physical ability an observational study of 114 949 adults in the CONSTANCES cohort

Abstract : Background - The knee is one of the major sites of musculoskeletal pain, yet few large-scale studies have evaluated the impact of knee disorders on physical limitations. Our objective was to describe this impact in a large-scale population study. Methods - We included subjects of working age from the CONSTANCES cohort, from its inception. Four groups were distinguished according to their medical history: whether they had knee arthroplasty (KA), meniscus surgery, severe knee pain, or none of these. Outcomes assessed for physical limitations were self-reported limitations in the last 6 months due to health problems, limitation on carrying 5 kg on 10 m and a 3-metre length rapid gait speed test (for participants aged >45). Associations between knee groups and patients' characteristics and physical limitations were analysed using logistic regression. Robust associations were deemed relevant if their ORs were higher than 2 and their p value lower than 0.0001. Results - Of the 114 949 individuals, 99 052 (86.2%) were in the 'no pain and no surgery' group, 14 740 (12.8%) were in the severe knee pain group, 1019 (0.89%) had meniscus surgery and 138 (0.12%) had KA. Severe knee pain and KA groups showed a similar profile (they were less at work, reported more deterioration in their health and had more limitations). Conclusion - Almost 14% of the sample had knee disorders. Subjects reporting severe knee pain or who had KA reported more important physical limitations then subjects who reported neither severe knee pain nor knee surgery.
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Remi Valter, Diane Godeau, Annette Leclerc, Alexis Descatha, Marc Fadel. Influence of severe knee pain, meniscus surgery and knee arthroplasty on physical ability an observational study of 114 949 adults in the CONSTANCES cohort. BMJ Open, BMJ Publishing Group, 2019, 9 (12), pp.e031549. ⟨10.1136/bmjopen-2019-031549⟩. ⟨hal-02441221⟩

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