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Evaluation of two cane instruments in older adults with knee osteoarthritis

Evaluation of two cane instruments in older adults with knee osteoarthritis. Nancy Harada, PT, PhD; Stephanie Fong; Constance Heiney, MS; Jennifer M. Yentes, PhD; Karen L. Perell-Gerson, PhD; Meika A. Fang, MD. Aim

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Evaluation of two cane instruments in older adults with knee osteoarthritis

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  1. Evaluation of two cane instruments in older adults with kneeosteoarthritis Nancy Harada, PT, PhD; Stephanie Fong; Constance Heiney, MS; Jennifer M. Yentes, PhD; Karen L. Perell-Gerson, PhD; Meika A. Fang, MD

  2. Aim • Describe psychometric properties of Cane Cognitive Mediator Scale (CCMS) and Psychosocial Impact of Assistive Devices Scale (PIADS) in adults with knee osteoarthritis (OA). • Determine feasibility of using instruments to identify patients likely to use a cane. • Relevance • Extent to which older adults chooses to use prescribed assistive device may influence how long they will remain functionally independent.

  3. Method • Data from randomized crossover trial were analyzed for 53 older adults with knee OA. • Baseline: • Perceptions on using a cane were measured with CCMS and PIADS. • 1 week later: • CCMS was repeated. • 6 months later: • Subjects rated their intention to use a cane.

  4. Results • 1-week test-retest reliability: • Acceptable for CCMS Attitudes and Subjective Norms subscales. • Low for CCMS Perceived Behavioral Control subscale. • Internal consistency reliability: • Good for each CCMS and PIADS subscale. • Predictive validity: • CCMS Subjective Norms subscale: Acceptable across all subgroups. • PIADS Adaptability subscale: acceptable for 45 to 64 year-old group.

  5. Conclusion • Findings indicate that CCMS Subjective Norms subscale exhibits good psychometric properties and has potential application as a screening tool.

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