Relationship between lower limb muscle strength and hallux valgus severity in older people |
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| Affiliation: | 1. School of Allied Health, Human Services and Sport, College of Science, Health and Engineering, La Trobe University, Melbourne, Victoria 3086, Australia;2. School of Health Sciences, Faculty of Medicine and Health, University of Newcastle, Ourimbah, New South Wales 2258, Australia;1. Department of Industrial Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand;2. Program of Production Technology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand;3. Research Center in Back, Neck, Other Joint Pain and Human Performance (BNOJPH), Khon Kaen, Thailand;4. Division of Physical Therapy, Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC, USA;5. School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand;6. Department of Industrial and Systems Engineering, University of Florida, Gainesville, FL, USA;1. Department of Orthopedics, JPNATC, AIIMS, New Delhi, India;2. Department of Orthopedics, Institute of Medical Sciences (IMS), BHU, Varanasi, India;1. University of Health Science Turkey, Gulhane Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Ankara, Turkey;2. Kırıkkale University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Kırıkkale, Turkey;3. Balıkesir University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Balıkesir, Turkey;4. Kırıkkale University, Faculty of Medicine, Department of Orthopedics and Traumatology, Kırıkkale, Turkey;1. Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium;2. Departments of Human Physiology and Physiotherapy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium |
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| Abstract: | ObjectiveTo examine differences in lower limb muscle strength between older people with varying degrees of hallux valgus deformity.MethodsMuscle strength was measured at the knee, ankle and foot using hand-held dynamometry and a clinical test of toe strength (the paper grip test) in 157 older people (99 women and 58 men) aged 65 to 91 (mean 74.1, SD 5.9) years. Hallux valgus severity was documented as none, mild, moderate or severe using validated photographs. Differences in muscle strength according to hallux valgus severity were evaluated using analysis of variance, adjusting for age. Paper grip test performance was compared across the hallux valgus severity groups using the chi-square (χ2) statistic.ResultsKnee extension, ankle joint dorsiflexion, ankle joint plantar flexion, ankle joint inversion, ankle joint eversion and lesser toe plantarflexion strength were not significantly different across the four hallux valgus severity groups. However, there was a significant, dose-response reduction in hallux plantarflexion strength with increasing severity of hallux valgus. This persisted after adjustment for age (F3 = 5.5, p = 0.001) with a medium effect size (partial η2 = 0.10). The number of participants who could successfully complete the paper grip test of the hallux significantly reduced across the four hallux valgus categories (χ2 = 18.5, p < 0.001).ConclusionsThere is a specific and progressive reduction in hallux plantarflexion strength with increasing severity of hallux valgus in older people. This finding has potential implications for both the aetiology and treatment of this common and disabling condition. |
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| Keywords: | Foot Hallux valgus Strength Ageing |
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