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    A pilot study of a crossover trial with randomized use of ankle-foot orthoses for people with Charcot–Marie–Tooth disease

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    Abstract
    Objectives: This was a pilot and feasibility study of a crossover trial with randomized use of ankle-foot orthoses by people with Charcot–Marie–Tooth (CMT) disease, investigating the effects of these on gait parameters, practical aspects of use and achievement of goals. Design: A randomized crossover trial. Setting: The community and ambulatory care. Participants: Eight adults with CMT disease type 1 or 2. Interventions: Ligaflex™, custom-made polypropylene and silicone ankle-foot orthoses worn in randomized order for three weeks each, with a washout week in-between; the orthoses of each participant’s choice were then worn until 28 weeks. Main outcome measures: The primary outcome measure was gait velocity; other outcome measures included Goal Attainment Scaling; Likert scores, concerning aspects of orthosis use and gait analysis parameters. Results: Gait velocity was greatest wearing polypropylene orthoses, median 0.96 (interquartile range (IQR) 0.75–1.18) ms −1, compared with silicone orthoses, median 0.88 (0.71–1.12) ms −1, and no orthosis, median 0.79 (0.56–0.84) ms −1, P = 0.006. The silicone orthoses met goals more successfully and scored more favourably for comfort, 5.0 (5.0–6.0), P = 0.003 and pain, 5.5 (4.0–7.0), P = 0.015. Future modifications to study methodology were identified, such as a longer period of wear and measurement of walking in different situations. Conclusions: This study confirmed the feasibility of a larger trial. It indicated differences in walking velocity and parameters concerning wear of the orthoses that could be explored further. A further crossover trial would require 27 participants in order to show a clinically meaningful difference in velocity of 0.13 ms −1 with 90% power and alpha of 5%.
    URI
    https://orda.derbyhospitals.nhs.uk/handle/123456789/1407
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    • Therapies and Specialist Rehabilitation [66]
    Date
    2012-06
    Author
    Phillips, Margaret
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