J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (3): 259-266.doi: 10.1007/s12204-021-2291-7

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Biomechanical Analysis of Personalised 3D-Printed Clavicle Plates of Different Materials to Treat Midshaft Clavicle Fractures

CHENG Rongshan1,2 (程荣山), JIANG Ziang1,2 (蒋子昂), DIMITRIOU Dimitris3, GONG Weihua1,2 (龚伟华), TSAI Tsung-Yuan1,2 (蔡宗远)   

  1. (1. School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030,
    China; 2. Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University
    School of Medicine, Shanghai 200011, China; 3. Department of Orthopedics, B¨urgerspital Solothurn,
    Sch¨ongr¨unstrasse 42, CH-4500 Solothurn, Switzerland)
  • 出版日期:2021-06-28 发布日期:2021-06-02
  • 通讯作者: GONG Weihua(龚伟华), TSAI Tsung-Yuan (蔡宗远) E-mail:gwh1124@sina.com, tytsai@sjtu.edu.cn
  • 基金资助:
    the National Natural Science Foundation
    of China (Nos. 81772425, 31771017, and 31972924),
    the Project of Science and Technology Commission
    of Shanghai Municipality (No. 16441908700), the Innovation
    Research Plan of Shanghai Municipal Education
    Commission (No. ZXWF082101), the National
    Key Research and Development Program of
    China (Nos. 2017YFC0110700, and 2019YFC0120600),
    and the Interdisciplinary Program of Shanghai Jiao
    Tong University (Nos. YG2016MS11, JYYQ201516,
    YG2017MS09, and ZH2018QNA06)

Biomechanical Analysis of Personalised 3D-Printed Clavicle Plates of Different Materials to Treat Midshaft Clavicle Fractures

CHENG Rongshan1,2 (程荣山), JIANG Ziang1,2 (蒋子昂), DIMITRIOU Dimitris3, GONG Weihua1,2 (龚伟华), TSAI Tsung-Yuan1,2 (蔡宗远)   

  1. (1. School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030,
    China; 2. Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University
    School of Medicine, Shanghai 200011, China; 3. Department of Orthopedics, B¨urgerspital Solothurn,
    Sch¨ongr¨unstrasse 42, CH-4500 Solothurn, Switzerland)
  • Online:2021-06-28 Published:2021-06-02
  • Contact: GONG Weihua(龚伟华), TSAI Tsung-Yuan (蔡宗远) E-mail:gwh1124@sina.com, tytsai@sjtu.edu.cn
  • Supported by:
    the National Natural Science Foundation
    of China (Nos. 81772425, 31771017, and 31972924),
    the Project of Science and Technology Commission
    of Shanghai Municipality (No. 16441908700), the Innovation
    Research Plan of Shanghai Municipal Education
    Commission (No. ZXWF082101), the National
    Key Research and Development Program of
    China (Nos. 2017YFC0110700, and 2019YFC0120600),
    and the Interdisciplinary Program of Shanghai Jiao
    Tong University (Nos. YG2016MS11, JYYQ201516,
    YG2017MS09, and ZH2018QNA06)

摘要: This study was aimed at comparing the biomechanical performance of personalised 3D-printed clavicle  plates of different materials to treat midshaft clavicle fractures with the finite element (FE) method. The FE  model of a fractured clavicle with a personalised 3D-printed clavicle plate and screws was constructed. Three  types of materials were simulated, including stainless steel, titanium alloy, and magnesium alloy. Two loading  conditions (axial compression and inferior bending) were applied at the distal end of the clavicle to simulate arm  abduction. Plate stiffness, peak stress, and bone strain at the clavicle fracture site were measured and compared.  The stiffness of the stainless steel clavicle plate was significantly greater than that of the titanium alloy clavicle  plate. The stiffness of the magnesium alloy clavicle plate was similar to that of the intact clavicle; peak stress  of the magnesium alloy clavicle plate was the lowest; thus, it had less stress-shielding effects on bone formation.  The magnesium alloy clavicle plate was more likely to form bone by distributing proper strain at the clavicle  fracture site. According to the influence of different materials on the tensile strength, magnesium alloy clavicle  plates might be preferred owing to their bionic stiffness in the treatment of patients with a low risk of falling. For  patients who engage in contact sports, a titanium alloy clavicle plate might be more suitable.

Abstract: This study was aimed at comparing the biomechanical performance of personalised 3D-printed clavicle  plates of different materials to treat midshaft clavicle fractures with the finite element (FE) method. The FE  model of a fractured clavicle with a personalised 3D-printed clavicle plate and screws was constructed. Three  types of materials were simulated, including stainless steel, titanium alloy, and magnesium alloy. Two loading  conditions (axial compression and inferior bending) were applied at the distal end of the clavicle to simulate arm  abduction. Plate stiffness, peak stress, and bone strain at the clavicle fracture site were measured and compared.  The stiffness of the stainless steel clavicle plate was significantly greater than that of the titanium alloy clavicle  plate. The stiffness of the magnesium alloy clavicle plate was similar to that of the intact clavicle; peak stress  of the magnesium alloy clavicle plate was the lowest; thus, it had less stress-shielding effects on bone formation.  The magnesium alloy clavicle plate was more likely to form bone by distributing proper strain at the clavicle  fracture site. According to the influence of different materials on the tensile strength, magnesium alloy clavicle  plates might be preferred owing to their bionic stiffness in the treatment of patients with a low risk of falling. For  patients who engage in contact sports, a titanium alloy clavicle plate might be more suitable.

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