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Introduction to lightweight materials
Published in S. Thirumalai Kumaran, Tae Jo Ko, S. Suresh Kumar, Temel Varol, Materials for Lightweight Constructions, 2023
Vigneshwaran Shanmugam, Rhoda Afriyie Mensah, N. B. Karthik Babu, C. Pradeep Raja, J. Ronald Aseer, A. Pugazhenthi, D. Satish Kumar, Oisik Das
Similarly, ligaments damaged due to injury because of cyclic loading can also be replaced using artificial ligaments. Damage to ligaments is common among athletes, cyclists, and workers that lift heavy weights. A biodegradable composite made of polylactic acid and hyaluronic acid ester is used as a replacement in this case of an artificial ligament. Combinations of metals, polymers, composites, and ceramics are used as joint prosthetics, such as with hip joints in which the stem is made of metal alloy (good strength) and the ball a combination of composite material (high wear resistance). Hence, we can clearly see that these biocomposite materials, metallic alloys, and ceramics can be tailored to achieve the desired properties and serve the specific biomedical application.
Biomechanical effect of posterior ligament repair in lamina repair surgery
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2023
Kaixiang Jin, Yuanjun Zhu, Nan Li, Yinghui Li, Yan Yao, Zhongjun Mo, Yubo Fan
As previous studies point out, the posterior ligaments are believed playing important roles in tethering or tension constraint during anterior flexion or enhancement of spinal stability (Menku et al. 2010). Thereby, new methods to conserve ISL during lamina repair surgery were proposed (Joson and McCormick 1987), and ISL reconstruction by using artificial ligament was also suggested (Hirofuji et al. 1990). However, are there apparent benefits in term of biomechanical performances of lamina repair surgery combined with posterior ligament repair than that without posterior ligament repair? In the present study, a finite element cervical spine model (C2-C7) was built and used to simulate the lamina repair surgery with and without posterior ligaments repair at C3-C6 segments, to investigate the biomechanical effects of ligament repair on the cervical spinal stability in lamina repair surgery.