Effectiveness of customized insoles in patients with Morton's neuroma: a randomized, controlled, double-blind clinical trial

Hilda Alcântara Veiga de Oliveira, Jamil Natour, Mariana Vassalli, Andre Rosenfeld, Fabio Jennings, Anamaria Jones
Clinical Rehabilitation 2019, 33 (12): 1898-1907

OBJECTIVE: To assess the effectiveness of customized insole in patients with Morton's neuroma.

DESIGN: Double-blind randomized controlled trial with intent-to-treat analysis.

SETTING: Outpatients, University Hospital.

SUBJECTS: A total of 72 patients with Morton's neuroma met the inclusion criteria and were randomly allocated to either the study group ( n  = 36) or the control group ( n  = 36).

INTERVENTIONS: The study group was assigned to use a customized insole with metatarsal and arch support made of ethyl vinyl acetate and the control group received a flat insole of the same material, color, and density.

MAIN MEASURES: The primary outcome measure was walking pain intensity measured by the visual analogue scale. The secondary outcomes were as follows: pain at rest, palpation, and paresthesia (visual analogue scale); functional disability (6-minute walk test, Foot Function Index, and Foot Health Status Questionnaire); quality of life (Health Survey Short Form-36 (SF-36)); and foot pressure (AM Cube FootWalk Pro program).

RESULTS: In the comparison between the groups over time, a statistically significant difference, with improvement in favor of the experimental group, was found for pain during walking ( P = 0.048); in the general health domains ( P < 0.001) and physical activity ( P = 0.025) of the Foot Health Status Questionnaire; in the general Foot Function Index score ( P = 0.012); and in the functional capacity domain of the SF-36 questionnaire ( P = 0.046). For the other parameters, no difference was found between groups.

CONCLUSION: The study demonstrated that customized insole with metatarsal and arch support relieved walking pain and improved patient-reported measures of function in patients with Morton's neuroma.

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