Effects of wearing textured versus smooth shoe insoles for 12 weeks on gait, foot sensation and patient-reported outcomes, in people with multiple sclerosis: a randomised controlled trial
Anna L. Hatton A * , Katrina Williams A , Mark D. Chatfield B , Sheree Hurn C , Jayishni N. Maharaj D , Elise M. Gane A , Thomas Cattagni E , John Dixon F , Keith Rome G , Graham Kerr H and Sandra G. Brauer AA School of Health and Rehabilitation Sciences,
B Centre for Health Sciences Research,
C School of Clinical Sciences,
D School of Allied Health Sciences,
E Laboratory Movement, Interactions, Performance EA 4334,
F School of Health & Social Care,
G School of Clinical Sciences,
H Institute of Health and Biomedical Innovation,
Abstract
Innovative shoe insoles, designed to enhance sensory information on the plantar surface of the feet, could help to improve walking in people with Multiple Sclerosis.
To compare the effects of wearing textured versus smooth insoles, on measures of gait, foot sensation and patient-reported outcomes, in people with Multiple Sclerosis.
A prospective, randomised controlled trial was conducted with concealed allocation, assessor blinding and intention-to-treat analysis. Thirty ambulant men and women with multiple sclerosis (MS) (Disease Steps rating 1–4) were randomly allocated to wear textured or smooth insoles for 12 weeks. Self-reported insole wear and falls diaries were completed over the intervention period. Laboratory assessments of spatiotemporal gait patterns, foot sensation and proprioception, and patient-reported outcomes, were performed at Weeks 0 (Baseline 1), 4 (Baseline 2) and 16 (Post-Intervention). The primary outcome was the size of the mediolateral base of support (stride/step width) when walking over even and uneven surfaces. Independent t-tests were performed on change from baseline (average of baseline measures) to post-intervention.
There were no differences in stride width between groups, when walking over the even or uneven surfaces (P ≥ 0.20) at post-intervention. There were no between-group differences for any secondary outcomes including gait (all P values > 0.23), foot sensory function (all P values ≥ 0.08) and patient-reported outcomes (all P values ≥ 0.23).
In our small trial, prolonged wear of textured insoles did not appear to alter walking or foot sensation in people with MS who have limited foot sensory loss. Further investigation is needed to explore optimal insole design.
Australian and New Zealand Clinical Trials Registry (ACTRN12615000421538).
Keywords: Gait, orthotic devices, multiple sclerosis, foot sensation, proprioception.
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