• Clinical rheumatology · Apr 2020

    Pain catastrophizing affects stair climbing ability in individuals with knee osteoarthritis.

    • Yusuke Suzuki, Hirotaka Iijima, and Tomoki Aoyama.
    • Department of Physical Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, 1398 Shimami-cho, Kita-ku, Niigata-shi, Niigata, 950-3198, Japan. yusuke-suzuki@nuhw.ac.jp.
    • Clin. Rheumatol. 2020 Apr 1; 39 (4): 1257-1264.

    ObjectiveThe association between pain catastrophizing and ability to perform activities of daily living (ADL) requiring weight bearing, in particular stair climbing, standing from a seated position, and walking, in individuals with knee osteoarthritis (OA) is unclear. This study aimed to investigate the association between pain catastrophizing and ability to perform these ADLs by this population.MethodThis cross-sectional study included individuals with knee OA (Kellgren and Lawrence grades 1-4). The ability to perform ADL was evaluated using the knee OA-related health domain measure (Japanese Knee Osteoarthritis Measure). Pain catastrophizing was evaluated using the Pain Catastrophizing Scale. The association between pain catastrophizing and ability to perform ADL, in particular stair climbing, standing from a seated position, and walking, was evaluated using the logistic regression analysis. Three types of sensitivity analysis were performed to validate the results of the logistic regression analysis.ResultsA total of 151 participants were included in the final analysis. When adjusted for covariates, those with pain catastrophizing showed significantly decreased stair climbing ability (odds ratio 8.84; 95% confidence interval 1.37 to 56.92). Moreover, the results did not change even with sensitivity analysis. By contrast, when adjusted for covariates, those with pain catastrophizing did not show significantly decreased ability to stand from a seated position and walk.ConclusionPain catastrophizing in knee OA patients showed significantly decreased stair climbing ability. There is a need to consider the effect of pain catastrophizing in rehabilitation of knee OA patients with decreased ability to climb stairs.Key Points• Pain catastrophizing in knee OA patients showed significantly decreased stair climbing ability.• Ability to stand from a seated position and walk were not affected by pain catastrophizing.• There is a need to consider the effect of pain catastrophizing in rehabilitation of knee OA patients with decreased ability to climb stairs.

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