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.
作者
程荣山
蒋子昂
DIMITRIOU Dimitriou
龚伟华
蔡宗远
CHENG Rongshan;JIANG Ziang;DIMITRIOU Dimitriou;GONG Weihua;TSAI Tsung-Yuan(School of Biomedical Engineering&Med-X Research Institute,Shanghai Jiao Tong University,Shanghai,200030,China;Department of Orthopaedic Surgery,Shanghai Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200011,China;Department of Orthopedics,Bürgerspital Solothurn,Schöngrünstrasse 42,CH-4500,Solothurn,Switzerland)
基金
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)
the Interdisciplinary Program of Shanghai Jiao Tong University(Nos.YG2016MS11,JYYQ201516,YG2017MS09,and ZH2018QNA06)。