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

Autor: Joyce A. C. van Tunen, Kade L. Paterson, Tim V. Wrigley, Ben R. Metcalf, Jonas B. Thorlund, Rana S. Hinman
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Journal of Foot and Ankle Research, Vol 11, Iss 1, Pp 1-8 (2018)
Druh dokumentu: article
ISSN: 1757-1146
DOI: 10.1186/s13047-018-0278-x
Popis: Abstract 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
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