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

doi:10.1007/s12204-021-2291-7

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

• Medical 3D Printing and Personalised Medicine • Previous Articles Next Articles

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. 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)
(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)

Abstract

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.

Key words: personalised treatment, 3D printing, clavicle plate, biomechanical analysis

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.

关键词: personalised treatment, 3D printing, clavicle plate, biomechanical analysis

CLC Number:

R 318.01

CHENG Rongshan, (程荣山), JIANG Ziang, (蒋子昂), DIMITRIOU Dimitris, GONG Weihua, (龚伟华), TSAI Tsung-Yuan, (蔡宗远). Biomechanical Analysis of Personalised 3D-Printed Clavicle Plates of Different Materials to Treat Midshaft Clavicle Fractures[J]. J Shanghai Jiaotong Univ Sci, 2021, 26(3): 259-266.

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

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

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