膝关节矫形器通过修正膝关节异常来帮助步态受损的患者,恢复流动性,减轻疼痛,屏蔽,和固定。矫形器费力的传统石膏成型程序不可避免的问题可以通过3D打印解决。然而,许多挑战限制了3D打印的采用,其中最重要的是正确选择矫形器的材料。之所以如此,是因为用于制造矫形器的材料会影响其强度,适应性,长寿,体重,湿度响应,等。这项研究旨在检查机械,物理,和三维(3D)打印材料的尺寸特性(PLA,ABS,PETG,TPU,和PP)。这项调查的目的是获得有关这些材料用作膝关节矫形器材料的潜力的知识。拉伸试验,奥林巴斯显微镜成像,吸水率研究,基于坐标测量机的尺寸分析用于表征各种3D打印材料。根据调查,PLA在屈服强度方面优于所有其他材料(25.98MPa),抗拉强度(30.89MPa),和收缩率(0.46%)。PP是吸水性最低(0.15%)和最灵活(407.99%);然而,它是最难制造使用3D打印。当使用3D打印生产膝盖矫形器时,PLA可用于矫形器框架和其他结构元件,PLA或ABS,用于铰链等移动部件,PP用于填充,和TPU或PP的表带。这项研究为科学家和医学专业人员提供了有用的信息,他们对3D打印的各种聚合物材料及其有效利用来制造膝盖矫形器感兴趣。
Knee orthoses assist patients with impaired gait through the amendment of knee abnormalities, restoration of mobility, alleviation of pain, shielding, and immobilization. The inevitable issues with laborious traditional plaster molding procedures for orthoses can be resolved with 3D printing. However, a number of challenges have limited the adoption of 3D printing, the most significant of which is the proper material selection for orthoses. This is so because the material used to make an
orthosis affects its strength, adaptability, longevity, weight, moisture response, etc. This study intends to examine the mechanical, physical, and dimensional characteristics of three-dimensional (3D) printing materials (PLA, ABS, PETG, TPU, and PP). The aim of this investigation is to gain knowledge about these materials\' potential for usage as knee
orthosis materials. Tensile testing, Olympus microscope imaging, water absorption studies, and coordinate measuring machine-based dimension analysis are used to characterize the various 3D printing materials. Based on the investigation, PLA outperforms all other materials in terms of yield strength (25.98 MPa), tensile strength (30.89 MPa), and shrinkage (0.46%). PP is the least water absorbent (0.15%) and most flexible (407.99%); however, it is the most difficult to fabricate using 3D printing. When producing knee orthoses with 3D printing, PLA can be used for the
orthosis frame and other structural elements, PLA or ABS for moving parts like hinges, PP for padding, and TPU or PP for the straps. This study provides useful information for scientists and medical professionals who are intrigued about various polymer materials for 3D printing and their effective utilization to fabricate knee orthoses.