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An Overview of Scaffold Design and Fabrication Technology for Engineered Knee Meniscus

机译:工程膝关节半月板支架设计与制造技术概述

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摘要

Current surgical treatments for meniscal tears suffer from subsequent degeneration of knee joints, limited donor organs and inconsistent post-treatment results. Three clinical scaffolds (Menaflex CMI, Actifit® scaffold and NUsurface® Meniscus Implant) are available on the market, but additional data are needed to properly evaluate their safety and effectiveness. Thus, many scaffold-based research activities have been done to develop new materials, structures and fabrication technologies to mimic native meniscus for cell attachment and subsequent tissue development, and restore functionalities of injured meniscus for long-term effects. This study begins with a synopsis of relevant structural features of meniscus and goes on to describe the critical considerations. Promising advances made in the field of meniscal scaffolding technology, in terms of biocompatible materials, fabrication methods, structure design and their impact on mechanical and biological properties are discussed in detail. Among all the scaffolding technologies, additive manufacturing (AM) is very promising because of its ability to precisely control fiber diameter, orientation, and pore network micro-architecture to mimic the native meniscus microenvironment.
机译:当前用于半月板撕裂的外科治疗遭受随后的膝关节退化,供体器官受限和后处理结果不一致的困扰。市场上有三种临床支架(Menaflex CMI,Actifit ®支架和NUsurface ®半月板植入物),但需要更多数据以正确评估其安全性和有效性。因此,已经进行了许多基于支架的研究活动,以开发新的材料,结构和制造技术,以模仿天然半月板进行细胞附着和随后的组织发育,并恢复受损半月板的功能以实现长期效果。这项研究首先概述了弯月面的相关结构特征,然后描述了关键的考虑因素。在生物相容性材料,制造方法,结构设计及其对机械和生物学特性的影响方面,详细讨论了半月板支架技术领域的可喜进展。在所有脚手架技术中,增材制造(AM)非常有前途,因为它能够精确地控制纤维的直径,方向和孔网络微体系结构,以模仿自然的弯月面微环境。

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