唐氏综合征患儿站立时足踝应力传导模式研究

Translated title of the contribution: Force Transmission Mode of Foot Ankle in Children with Down's Syndrome During Standing

Yaqi Li, Shangjun Huang, Beihua Zhang, Weizhi Huang, Yan Wang, Wenxin Niu, Ming Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Objective: To explore the joint contact force, ligament tensile force and force transmission mode of foot internal structure in Down's syndrome child (DSC) during standing. Methods: The finite element models of foot were constructed based on CT image data from one DSC and one typically developing child (TDC). The models were validated by plantar pressure measurement during static standing. To simulate foot force during standing, the ground reaction force and the triceps surae force were applied as the loading condition. Contact pressure of the tibiotalar, talonavicular and calcaneocuboid joints, tensile force of the spring and plantar calcaneocuboid ligaments, and force transmission mode in transverse tarsal joints were calculated and analyzed. Results: The finite element models of foot were validated to be reliable. Compared with the TDC, the DSC showed higher contact pressure at the tibiotalar joint and lower contact pressure at the talonavicular joint. The tensile force of spring and plantar calcaneocuboid ligaments of DSC was 10 times and 58 times of TDC, respectively. The forces transmitted through both mediate and lateral columns in DSC were lower than those in TDC. Conclusions: Abnormal contact pressure of the tibiotalar joint, larger tensile force of midfoot ligaments and smaller force of the transverse tarsal joint were found in DSC during standing. The abnormal alteration of stress patterns in foot internal structure of DSC should be fully considered in clinical rehabilitation, so as to provide theoretical references for screening and making intervention plans for early rehabilitation, as well as designing individualized orthopedic insoles.

Translated title of the contributionForce Transmission Mode of Foot Ankle in Children with Down's Syndrome During Standing
Original languageChinese (Simplified)
Pages (from-to)59-65
Number of pages7
JournalYiyong Shengwu Lixue/Journal of Medical Biomechanics
Volume37
Issue number1
DOIs
Publication statusPublished - Feb 2022

Keywords

  • Contact force
  • Down's syndrome
  • Foot ankle
  • Force transmission
  • Ligament tension

ASJC Scopus subject areas

  • Biomedical Engineering

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