The aim of this study is to provide an effective method to construct a three-dimensionally (3D) printed scaffold to reconstruct a damaged bone. The tibia of a rabbit with a comminuted fracture was scanned by computed tomography. A bio-scaffold was designed using a 3D modeling program for its reconstruction and fabricated by a 3D printer. As the tibia could tolerate a large stress, pure biodegradable materials used alone as scaffold were not effective as they could not sufficiently support the weight of rabbit. Therefore, an external metal scaffold was required as a support. To fabricate the metal scaffold, its mechanical properties were calculated using simulations by the ANSYS static structural program. The simulation showed that the metal scaffold could endure five times the rabbit’s weight with a volume of 2362.93 mm³, area of 3671.23 mm², and weight of 10.73 g. The proposed design of metal scaffold for a fractured bone exhibited a high supporting ability for the weight of the rabbit. The necessity of an external metal scaffold to support the biodegradable scaffold in bone reconstruction is demonstrated.

这项研究的目的是提供一种构建三维（3D）打印支架以重建受损骨骼的有效方法。通过计算机断层摄影术扫描具有粉碎性骨折的兔子的胫骨。使用3D建模程序为其设计了生物支架，并通过3D打印机对其进行了制造。由于胫骨可以承受较大的压力，因此单独用作脚手架的纯生物可降解材料无效，因为它们无法充分支撑兔子的体重。因此，需要外部金属支架作为支撑。为了制造金属支架，使用ANSYS静态结构程序的模拟来计算其机械性能。模拟表明，金属支架可以承受兔子重量的五倍，体积为2362.93 mm ³，面积为3671.23 mm ²，重量为10.73 g。所提出的用于骨折骨的金属支架的设计表现出对兔子重量的高支撑能力。证明了在骨重建中需要外部金属支架来支撑生物可降解支架。