3D-Printed Porous Titanium Augments for Reconstruction of Massive Bone Defect in Complex Revision Total Knee Arthroplasty:Implant Design and Surgical Technique

作     者：KAN Tianyou XIE Kai QU Yang AI Songtao JIANG Wenbo WU Haishan WANG Liao YAN Mengning 阚天佑;谢凯;曲扬;艾松涛;姜闻博;吴海山;王燎;严孟宁

作者机构：Shanghai Key Laboratory of Orthopaedic ImplantsDepartment of Orthopaedic SurgeryShanghai Jiao Tong University School of MedicineShanghai200011China Department of RadiologyShanghai Jiao Tong University School of MedicineShanghai200011China Clinical and Translational Research Center for 3D Printing TechnologyShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2021年第26卷第3期

页      面：334-338页

核心收录：

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

基　　金：the 3D Snowball Project of Shanghai Jiao Tong University School of Medicine(No.GXQ202007) the Natural Science Foundation of Shanghai(No.20ZR1432000) the Project of Shanghai Collaborative Innovation Center for Translational Medicine(No.TM201814) the Clinical Research Program of the 9th People’s Hospital affiliated to Shanghai Jiao Tong University School of Medicine(No.JYLJ025) the National Natural Science Foundation of China(No.81772425) 

主　　题：3D printing revision total knee arthroplasty bone defect 

摘      要：Reconstruction of severe bone defects in revision total knee arthroplasty(TKA)remains a challenge for *** progression of medical imaging and additive manufacturing technology has enabled the rapid manufacture of custom-made implants,and 3D-printed augments with interconnected pore structures have become an alternative approach for the reconstruction of bone defects in revision TKA,especially in patients with complex bone *** size and location of the bone defect were determined by thin-layer computed tomography(CT;layer thickness is 1 mm)after reduction of *** 3D reconstruction models of the host bone were obtained based on thin-layer CT *** custom-made augmentation was designed according to the 3D reconstruction bone *** augmentation had an interconnected porous structure on the bone-implant interface to achieve biological *** the design was complete,the 3D model of augment was exported in STL format,and augments were fabricated with Ti6Al4V powder using electron beam ***-layer CT and 3D reconstruction bone models are accurate methods for evaluating periprosthetic bone loss after artifact *** 3D-printed augments perfectly match the bone defects during surgery.3D-printed augmentation is an effective approach for the reconstruction of bone defects in revision ***,surgeons and engineers should carefully evaluate the bone defect during augment design to avoid a mismatch between the augment and host bone.