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Design,fabrication,and structural safety validation of 3D-printable biporous bone augments

Bio-Design and Manufacturing 2023年第1期6卷 26-37页

作者： Yeokyung Kang Dasol Lim Doo-Hoon Sun Jong-Chul Park jungsung kim Central Research&Development Center Corentec Company Ltd.33-2Banpo-daero 20-gilSeocho-guSeoulRepublic of Korea Cellbiocontrol Laboratory Department of Medical EngineeringYonsei University College of Medicine50-1 Yonsei-roSinchon-dongSeodaemun-guSeoulRepublic of Korea Department of Orthopaedic Surgery Daejeon Sun Hospital10-7 Mok-dongJung-guDaejeonRepublic of Korea

The use of commercial products such as a cup and liner for total hip arthroplasty for patients with severe bone defects has a high probability of *** these patients the cup alone cannot cover the bone defect,and thus,an additional augment or cage is *** this study,we designed three-dimensional(3D)printable bone augments as an alternative to surgeries using reinforcement ***-five sharp-edged bone augments of various sizes were 3D printed.A biporous structure was designed to reduce the weight of the augment and to facilitate bone *** types of frames were used to prevent damage to the augment’s porous structure and maintain its stability during ***,two types of holes were provided for easy augment fixation at various *** tests were performed on a combination of worst-case sizes derived using finite element *** test results confirmed the structural stability of the specimens at a load of 5340 *** the porosity of the specimens was measured to be 63.70%,it cannot be said that the porous nature was uniformly distributed because porosity tests were performed locally and *** summary,3D-printable biporous bone augments capable of bonding from various angles and bidirectionally through angulation and bottom-plane screw holes are *** mechanical results with bone augments indicate good structural safety in ***,further research is necessary to study the clinical applications of the proposed bone augment.

关键词： Bone augment 3D printing Biporous structure Total hip arthroplasty Metal implant

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