The effect of insoles in therapeutic footwear - A finite element approach

David Lemmon, T. Y. Shiang, Azfar Hashmi, Jan S. Ulbrecht, Peter R. Cavanagh*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

202 引文 斯高帕斯(Scopus)

摘要

Current practice in the prevention of recurrence of neuropathic foot ulcers is to prescribe accommodative in-shoe orthoses or insoles which reduce plantar pressure levels at locations of bony prominences, particularly under the metatarsal heads. To date, design of these orthoses has largely been a trial and error process. There is little quantitative information available regarding the effects of thickness and the influence of soft tissue characteristics on the cushioning effect of such interventions. The current paper investigated alterations in pressure under the second metatarsal head as a function of insole thickness and tissue thickness. Both experimental and quasi-static plane strain finite element approaches were employed. The orthoses chosen reduced plantar pressure by a maximum of approximately 30% and were more effective (on a percentage basis) in the setting of reduced sub-metatarsal tissue thickness. Peak normal stresses predicted by the FE models were, on average, within 5.9% of experimentally measured values for the normal tissue case and 8.1% for the reduced tissue case. The techniques presented represent a promising approach to understanding plantar cushioning and the principles involved in the design of therapeutic footwear for insensate feet.

原文英語
頁(從 - 到)615-620
頁數6
期刊Journal of Biomechanics
30
發行號6
DOIs
出版狀態已發佈 - 1997 6月
對外發佈

ASJC Scopus subject areas

  • 生物物理學
  • 骨科和運動醫學
  • 生物醫學工程
  • 復健

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