Effect of knee unloading shoes on regional plantar forces in people with symptomatic knee osteoarthritis – an exploratory study

Autor: Tim V. Wrigley, Joyce van Tunen, Jonas Bloch Thorlund, Kade L. Paterson, Rana S Hinman, Ben R Metcalf
Rok vydání: 2018
Předmět:
Male
lcsh:Diseases of the musculoskeletal system
Heel
Knee Joint
Walking/physiology
Osteoarthritis
Walking
medicine.disease_cause
Weight-Bearing/physiology
Weight-bearing
Weight-Bearing
0302 clinical medicine
Medicine
Orthopedics and Sports Medicine
Orthodontics
Osteoarthritis
Knee/physiopathology
Equipment Design
Middle Aged
Osteoarthritis
Knee
musculoskeletal system
Adduction moment
medicine.anatomical_structure
Female
Knee osteoarthritis
Foot/physiopathology
Foot (unit)
musculoskeletal diseases
medicine.medical_specialty
Posture/physiology
Unloading
Posture
Heel/physiopathology
Footwear
03 medical and health sciences
Knee Joint/physiopathology
Pressure
Humans
Force
Aged
030203 arthritis & rheumatology
business.industry
Foot
Forefoot
Research
030229 sport sciences
medicine.disease
Shoes
body regions
Orthopedic surgery
lcsh:RC925-935
business
Zdroj: Journal of Foot and Ankle Research
van Tunen, J, Paterson, K, Wrigley, T V, Metcalf, B R, Thorlund, J B & Hinman, R S 2018, ' Effect of knee unloading shoes on regional plantar forces in people with symptomatic knee osteoarthritis-an exploratory study ', Journal of Foot and Ankle Research, vol. 11, 34 . https://doi.org/10.1186/s13047-018-0278-x
Journal of Foot and Ankle Research, Vol 11, Iss 1, Pp 1-8 (2018)
DOI: 10.1186/s13047-018-0278-x
Popis: Background: Knee 'unloading' footwear can reduce the external knee adduction moment in people with knee osteoarthritis, yet effects of these shoes on regional plantar forces are unknown. We evaluated the effects of unloading shoes on in-shoe regional plantar forces, and whether measures of foot posture and/or mobility moderate these effects in people with symptomatic knee osteoarthritis.Methods: In this exploratory study 21 participants underwent testing while wearing knee unloading shoes (ASICS GEL-Melbourne OA) and conventional shoes in random order. Peak total forces were compared across conditions for: lateral heel, medial heel, lateral forefoot, and medial forefoot. Arch index, centre of pressure position and medial-lateral heel peak force ratio were also evaluated. Foot posture, foot mobility magnitude and navicular drop were separately added to the mixed linear model to investigate if these modified the effect of footwear on outcomes.Results: Unloading shoes significantly increased lateral heel and lateral forefoot force (12.9 and 20.2% respectively, all P P = 0.001) and medial forefoot (9.9%, P = 0.005). Unloading shoes significantly shifted the centre of pressure anteriorly (4.7%, P P = 0.034), but did not affect the arch index (8.7%, P = 0.093). Foot posture, foot mobility magnitude and navicular drop did not moderate the effect of footwear on outcomes.Conclusion: Compared to conventional shoes, unloading shoes caused a lateral shift in foot pressure and force patterns. Although these effects were not moderated by foot posture, FMM or navicular drop, variability in the individual increases in lateral heel force suggests participant characteristics other than foot posture may play a role.Trial registration: ACTRN12613000851763. Registered 02 August 2013.
Databáze: OpenAIRE
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