Journal of Rehabilitation Research & Development (JRRD)

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Volume 51 Number 2, 2014
   Pages 275 — 284

Abstract — Evaluation of two cane instruments in older adults with knee osteoarthritis

Nancy Harada, PT, PhD;1–2 Stephanie Fong;1 Constance Heiney, MS;1 Jennifer M. Yentes, PhD;3 Karen L. ­Perell-Gerson, PhD;1,4 Meika A. Fang, MD1–2*

1Department of Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA; 2David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA; 3Nebraska Biomechanics Core Facility, University of Nebraska at Omaha, Omaha, NE; 4School of Science and Technology, Georgia Gwinnett College, Lawrenceville, GA

Abstract — The objectives of this study were to describe the psychometric properties of the Cane Cognitive Mediator Scale (CCMS) and the Psychosocial Impact of Assistive Devices Scale (PIADS) in adults with knee osteoarthritis (OA) and to determine the feasibility of applying these instruments as screening tools to identify patients with the propensity to use a cane. Data from a randomized crossover trial were analyzed for 53 older adults with knee OA. Perceptions on using a cane were measured at baseline using the CCMS and PIADS. The CCMS was repeated 1 wk later. At 6 mo, subjects rated their intention to use a cane. The findings indicated that 1 wk test-retest reliability was acceptable for the CCMS Attitudes and Subjective Norms subscales (r = 0.48 to 0.93) and low for the CCMS Perceived Behavioral Control subscale (r = 0.15). Internal consistency reliability was good for each CCMS and PIADS subscale. The CCMS Subjective Norms subscale demonstrated acceptable predictive validity across all subgroups (r = 0.53 to 0.88). The PIADS Adaptability subscale demonstrated acceptable predictive validity for the 45 to 64 yr-old age group (r = 0.54). The findings indicate that the CCMS Subjective Norms subscale exhibits good psychometric properties and has potential application as a screening tool.

Clinical Trial Registration: ClinicalTrials.gov; NCT00223795. “Walking aids in the management of knee osteoarthritis; http://www.clinicaltrails.gov/ct2/show/NCT00223795

Key words: assistive device, cane use, knee, older adults, osteoarthritis, psychosocial, rehabilitation, reliability, screening, validity.


View HTML ¦ View PDF ¦ Contents Vol. 51, No.2
This article and any supplementary material should be cited as follows:
Harada N, Fong S, Heiney C, Yentes JM, Perell-Gerson KL, Fang MA. Evaluation of two cane instruments in older adults with knee osteoarthritis. J Rehabil Res Dev. 2014;51(2):275–84.
http://dx.doi.org/10.1682/JRRD.2013.06.0140
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