Xu Tianpeng, Rao Jingdong, Mo Yongyi, Lam Avery Chik-Him, Yang Yuhe, Wong Sidney Wing-Fai, Wong Ka-Hing, Zhao Xin
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region.
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region; The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China.
Adv Drug Deliv Rev. 2025 Apr;219:115552. doi: 10.1016/j.addr.2025.115552. Epub 2025 Mar 1.
The musculoskeletal system relies on critical tissue interfaces for its function; however, these interfaces are often compromised by injuries and diseases. Restoration of these interfaces is complex by nature which renders traditional treatments inadequate. An emerging solution is three-dimensional printing, which allows for precise fabrication of biomimetic scaffolds to enhance tissue regeneration. This review summarizes the use of 3D printing in creating scaffolds for musculoskeletal interfaces, mainly focusing on advanced techniques such as multi-material printing, bioprinting, and 4D printing. We emphasize the significance of mimicking natural tissue gradients and the selection of appropriate biomaterials to ensure scaffold success. The review outlines state-of-the-art 3D printing technologies, varying from extrusion, inkjet and laser-assisted bioprinting, which are crucial for producing scaffolds with tailored mechanical and biological properties. Applications in cartilage-bone, intervertebral disc, tendon/ligament-bone, and muscle-tendon junction engineering are discussed, highlighting the potential for improved integration and functionality. Furthermore, we address challenges in material development, printing resolution, and the in vivo performance of scaffolds, as well as the prospects for clinical translation. The review concludes by underscoring the transformative potential of 3D printing to advance orthopedic medicine, offering a roadmap for future research at the intersection of biomaterials, drug delivery, and tissue engineering.
肌肉骨骼系统的功能依赖于关键的组织界面;然而,这些界面常常因损伤和疾病而受损。这些界面的修复本质上很复杂,这使得传统治疗方法并不充分。一种新兴的解决方案是三维打印,它能够精确制造仿生支架以促进组织再生。本综述总结了三维打印在创建用于肌肉骨骼界面的支架方面的应用,主要聚焦于多材料打印、生物打印和4D打印等先进技术。我们强调模仿天然组织梯度以及选择合适生物材料以确保支架成功的重要性。该综述概述了最先进的三维打印技术,包括挤出、喷墨和激光辅助生物打印等,这些技术对于生产具有定制机械和生物学特性的支架至关重要。讨论了在软骨 - 骨、椎间盘、肌腱/韧带 - 骨和肌肉 - 肌腱连接工程中的应用,突出了改善整合和功能的潜力。此外,我们探讨了材料开发、打印分辨率以及支架体内性能方面的挑战,以及临床转化的前景。综述最后强调了三维打印推动骨科医学发展的变革潜力,为生物材料、药物递送和组织工程交叉领域的未来研究提供了路线图。