J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (3): 398-403.doi: 10.1007/s12204-021-2311-7

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Clinical Observation of 3D Printing Technology in Insoles for Flexible Flatfoot Patients

WANG Yitian1‡ (王一天), JIANG Wenbo1‡ (姜闻博), GAN Yaokai1,2 (干耀恺), YU Yang1 (于洋), DAI Kerong1,2 (戴尅戎)   

  1. (a. Department of Orthopaedic Surgery; b. Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People’s
    Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China)
  • 出版日期:2021-06-28 发布日期:2021-06-02
  • 通讯作者: GAN Yaokai(干耀恺) E-mail:ganyk2004@126.com
  • 基金资助:
    the Class IV Peak Discipline Project of
    Shanghai Jiao Tong University School of Medicine – “3D
    Snowball” Project (No. Ggxq03)

Clinical Observation of 3D Printing Technology in Insoles for Flexible Flatfoot Patients

WANG Yitian1‡ (王一天), JIANG Wenbo1‡ (姜闻博), GAN Yaokai1,2 (干耀恺), YU Yang1 (于洋), DAI Kerong1,2 (戴尅戎)   

  1. (a. Department of Orthopaedic Surgery; b. Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People’s
    Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China)
  • Online:2021-06-28 Published:2021-06-02
  • Contact: GAN Yaokai(干耀恺) E-mail:ganyk2004@126.com
  • Supported by:
    the Class IV Peak Discipline Project of
    Shanghai Jiao Tong University School of Medicine – “3D
    Snowball” Project (No. Ggxq03)

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摘要： Flatfoot is defined as the flattening of the medial arch of the foot, and it is classified into flexible  flatfoot and rigid flatfoot based on whether the flattening of the medial arch of the foot can be reset when  standing on toes. The insole is the most basic and common treatment, which is relatively cheaper and easier to  adopt. Three-dimensional (3D) printing, an emerging technology characterized by high machining accuracy and  use of various materials, can be utilised in personalised insoles, which have good application prospects. Further  research on the clinical effects of 3D-printed insoles is still needed. In this study, 64 cases of 3D-printed insoles  were clinically observed. The results showed that 3D-printed insoles had statistically positive effects in treating  flatfoot (P = 0.000 17), and with adjustment and adaptation, their comfort and clinical effect can be improved.  This study provides an empirical reference for further large-scale clinical control research. 

Abstract: Flatfoot is defined as the flattening of the medial arch of the foot, and it is classified into flexible  flatfoot and rigid flatfoot based on whether the flattening of the medial arch of the foot can be reset when  standing on toes. The insole is the most basic and common treatment, which is relatively cheaper and easier to  adopt. Three-dimensional (3D) printing, an emerging technology characterized by high machining accuracy and  use of various materials, can be utilised in personalised insoles, which have good application prospects. Further  research on the clinical effects of 3D-printed insoles is still needed. In this study, 64 cases of 3D-printed insoles  were clinically observed. The results showed that 3D-printed insoles had statistically positive effects in treating  flatfoot (P = 0.000 17), and with adjustment and adaptation, their comfort and clinical effect can be improved.  This study provides an empirical reference for further large-scale clinical control research. 

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