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Immediate Effects of Medially Posted Insoles on Lower Limb Joint Contact Forces in Adult Acquired Flatfoot: A Pilot Study

Author

Listed:
  • Yinghu Peng

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Duo Wai-Chi Wong

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
    The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China)

  • Yan Wang

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
    The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China)

  • Tony Lin-Wei Chen

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Qitao Tan

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Zhenxian Chen

    (Key Laboratory of Road Construction Technology and Equipment (Ministry of Education), School of Mechanical Engineering, Chang’an University, Middle-section of Nan’er Huan Road, Xi’an 710064, China)

  • Zhongmin Jin

    (State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, No.28, Xianning West Road, Xi’an 710049, China)

  • Ming Zhang

    (Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
    The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China)

Abstract

Flatfoot is linked to secondary lower limb joint problems, such as patellofemoral pain. This study aimed to investigate the influence of medial posting insoles on the joint mechanics of the lower extremity in adults with flatfoot. Gait analysis was performed on fifteen young adults with flatfoot under two conditions: walking with shoes and foot orthoses (WSFO), and walking with shoes (WS) in random order. The data collected by a vicon system were used to drive the musculoskeletal model to estimate the hip, patellofemoral, ankle, medial and lateral tibiofemoral joint contact forces. The joint contact forces in WSFO and WS conditions were compared. Compared to the WS group, the second peak patellofemoral contact force ( p < 0.05) and the peak ankle contact force ( p < 0.05) were significantly lower in the WSFO group by 10.2% and 6.8%, respectively. The foot orthosis significantly reduced the peak ankle eversion angle ( p < 0.05) and ankle eversion moment ( p < 0.05); however, the peak knee adduction moment increased ( p < 0.05). The reduction in the patellofemoral joint force and ankle contact force could potentially inhibit flatfoot-induced lower limb joint problems, despite a greater knee adduction moment.

Suggested Citation

  • Yinghu Peng & Duo Wai-Chi Wong & Yan Wang & Tony Lin-Wei Chen & Qitao Tan & Zhenxian Chen & Zhongmin Jin & Ming Zhang, 2020. "Immediate Effects of Medially Posted Insoles on Lower Limb Joint Contact Forces in Adult Acquired Flatfoot: A Pilot Study," IJERPH, MDPI, vol. 17(7), pages 1-13, March.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:7:p:2226-:d:337349
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    References listed on IDEAS

    as
    1. Duo Wai-Chi Wong & Yan Wang & Tony Lin-Wei Chen & Aaron Kam-Lun Leung & Ming Zhang, 2017. "Biomechanical consequences of subtalar joint arthroereisis in treating posterior tibial tendon dysfunction: a theoretical analysis using finite element analysis," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(14), pages 1525-1532, October.
    2. Daniel López-López & Juan Manuel Vilar-Fernández & Gonzalo Barros-García & Marta Elena Losa-Iglesias & Patricia Palomo-López & Ricardo Becerro-de-Bengoa-Vallejo & Cesar Calvo-Lobo, 2018. "Foot Arch Height and Quality of Life in Adults: A Strobe Observational Study," IJERPH, MDPI, vol. 15(7), pages 1-7, July.
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    Cited by:

    1. Darja Nesterovica-Petrikova & Normunds Vaivads & Ainārs Stepens, 2023. "Increased Barefoot Stride Variability Might Be Predictor Rather than Risk Factor for Overuse Injury in the Military," IJERPH, MDPI, vol. 20(15), pages 1-9, July.
    2. Liya Xu & Hongyi Gu & Yimin Zhang & Tingting Sun & Jingjing Yu, 2022. "Risk Factors of Flatfoot in Children: A Systematic Review and Meta-Analysis," IJERPH, MDPI, vol. 19(14), pages 1-13, July.

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