The immediate effects of hallux valgus orthoses: A comparison of orthosis designs |
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| Institution: | 1. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong;2. Centre for Orthopaedic Surgery, Hong Kong;1. Department of Rehabilitation, Akita Prefectural Center for Rehabilitation and Psychiatric Medicine, 352 Gohyakukarita, Kamiyodokawa, Kyouwa, Daisen City, Akita, 019-2492, Japan;2. Department of Physical Therapy, Akita University Graduate School of Health Sciences, 1-1 Hondo 1-chome, Akita City, Akita, 010-8543, Japan;3. Suto Data Analytics Office, Ichikawa City, Chiba, Japan;1. Master Program in Rehabilitation Sciences, Universidade de Brasília (UnB), Campus UnB Ceilandia, Brasilia, Brazil;2. Spinal Cord Injury Department, Sarah Hospital Rehabilitation Network, Brasilia, Brazil;2. Spinal Cord Injury Department, Sarah Hospital Rehabilitation Network, Brasilia, Brazil;1. Master Program in Rehabilitation Sciences, Universidade de Brasília (UnB), Campus UnB Ceilandia, Brasilia, Brazil;1. King’s College Foot and Ankle Unit, King’s College Hospital NHS Foundation Trust, UK;2. The London Clinic, London, UK;1. Department of Orthopedic Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, 569-8686, Japan;2. Department of Orthopaedic Surgery, Shimizu Hospital, 11-2 Yamadanakayoshimi-cho, Nishikyo-ku, Kyoto, 615-8237, Japan;3. Department of Orthopaedic Surgery, Katsuragi Hospital, 2-33-1 Habu-cho, Kishiwada, 596-0825, Japan |
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| Abstract: | BackgroundHallux valgus orthoses are available in a wide range of designs and materials, but the effects of their design on functional performance have not been fully investigated.Research questionThis present study aims to comprehensively analyze the immediate effects of soft and semi-rigid hallux valgus orthoses on balance, plantar pressure, hallux valgus angle, and subjective sensations.MethodsSixteen female subjects have participated in the study, including 10 subjects with healthy feet and 6 with hallux valgus. Three conditions are tested, including in the barefoot and using two types of commercially available hallux valgus orthoses. The subjects participate in static and dynamic (walking) tests with the use of the Novel Pedar® system. The peak pressure values in the hallux, lateral toes, first metatarsophalangeal joint, 2-4th metatarsal heads, 5th metatarsal head, medial midfoot, lateral midfoot and rearfoot in the various foot conditions are examined and compared. The hallux valgus angle of each subject is measured based on their footprint. Their subjective feelings towards the orthoses are also evaluated. A repeated-measures analysis of variance, and independent-sample t-test are performed.ResultsThe correction of the hallux valgus angle is statistically significant when the subjects with hallux valgus use the orthoses. In comparing the two types of orthoses, the use of the orthosis made of soft materials results in correction in the hallux valgus angle and higher wear comfort, and lower plantar pressure in hallux area.SignificanceThe results provide insights into the design of hallux valgus orthoses, thus offering practical reference for the selection of hallux valgus orthosis with compromise between functional performance and wear comfort. |
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| Keywords: | Toes Foot diseases Plantar pressure Angle correction |
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