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

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Journal of Shanghai Jiaotong university(Science) 2021年第3期26卷 259-266页

作者： CHENG Rongshan JIANG Ziang DIMITRIOU Dimitriou GONG Weihua TSAI Tsung-Yuan School of Biomedical Engineering&Med-X Research Institute Shanghai Jiao Tong UniversityShanghai200030China Department of Orthopaedic Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China Department of Orthopedics Bürgerspital SolothurnSchöngrünstrasse 42CH-4500SolothurnSwitzerland

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)*** FE model of a fractured clavicle with a personalised 3D-printed clavicle plate and screws was *** types of materials were simulated,including stainless steel,titanium alloy,and magnesium *** loading conditions(axial compression and inferior bending)were applied at the distal end of the clavicle to simulate arm *** stiffness,peak stress,and bone strain at the clavicle fracture site were measured and *** stiffness of the stainless steel clavicle plate was significantly greater than that of the titanium alloy clavicle *** 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 *** magnesium alloy clavicle plate was more likely to form bone by distributing proper strain at the clavicle fracture *** 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 *** 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

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Total Talar Replacement Using a Novel 3D-Printed Prosthesis for Recurrent Giant Cell Tumour of the Talus

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Journal of Shanghai Jiaotong university(Science) 2021年第3期26卷 391-397页

作者： GAN Yaokai DAI Kerong LI Jianying SHI Dingwei SHEN Lu JIANG Wenbo Department of Orthopaedic Surgery Shanghai Jiao Tong University School of MedicineShanghai200011China Shanghai Key Laboratory of Orthopaedic Implants Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China

In our case,3D printing was used to fabricate a custom-made titanium alloy total talar prosthesis as a mirror image of the contralateral healthy talus for a 16-year-old girl who underwent right talar resection for a recurrent giant cell tumour(GCT)of the talus.A porous surface was used over the neck and tail of the talus prosthesis to promote soft tissue attachment and improve the stability of the ***-drilled medial and lateral holes were prepared for ligament repair and *** months after the operation,there was no tumour recurrence,and the patient walked without *** Musculoskeletal Tumour Society score was 22/30,the American Orthopaedic Foot and Ankle Society score was 88/100,and the prosthesis was well positioned on *** short-and medium-term outcomes indicated that 3D-printed modular talar prostheses could be an effective treatment option.

关键词： talus giant cell tumour(GCT) modular talar prostheses total talar replacement 3D printing personalised treatment

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Design and Application of 3D Printing Based personalised Pelvic Prostheses

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Journal of Shanghai Jiaotong university(Science) 2021年第3期26卷 361-367页

作者： WU Junxiang LUO Dinghao XIE Kai WANG Lei HAO Yongqiang Department of Orthopaedic Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China Medical 3D Printing Innovation Research Center for Technology Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China

In this paper,we describe the design and surgical process of personalised pelvic prostheses fixation through 3D printing according to different Enneking pelvic tumour zones:the ilium(Zone I),acetabulum(Zone II),and pubis and ischium(Zone III).A 3D model of the pelvis was reconstructed using imaging data,and the parameters on the planes of the acetabulum and pelvic incisal margin were *** main body of the pelvic prosthesis was constructed,a porous structure was designed on the bone-prosthesis interface,and the movement paths,lengths,and diameters of screws were *** combining the pathological model and osteotomy guide,limb salvage reconstruction was performed in patients with pelvic *** and postoperative data were compared to verify the prosthesis *** investigation revealed that the long-term survival of pelvic reconstruction prostheses depends on accurate matching with the bone defect area,good initial stability,and a porous structure to allow bone ingrowth.

关键词： pelvic prosthesis hemipelvic reconstruction personalised treatment 3D printing design solution

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