CAJ | 학술논문

Lumbar disc herniation is one of the major causes of chronic low back pain. Fusion surgery is the gold standard in surgical treatment of the disease, while adjacent segment degeneration is often resulted from the fusion surgery. In order to keep normal motion of the disc, artiifcial disc replacement has been put forward. In the past 50 years, the technology has developed from basic research and animal experiment stage to clinical application stage, which has become a routine treatment option for chronic low back pain. In recent 20 years, there has been many clinical and biomechanical research reports at home and abroad. Along with the advance of the technology, finite element method has been increasingly used in the biomechanical study on artificial lumbar disc. A large number of studies show that the clinical outcomes of disc prostheses are good, while the design and application of artiifcial intervertebral disc remain to be improved. By using three-dimensional ( 3 D ) ifnite element method, the mechanical properties can be obtained through the simulated body condition and simple physical experiment of artiifcialdisc prostheses, so as to reflect the mechanical changes of artificial disc in the process of physiological and pathological processes. The ifnite elementmethod can be used to analyze the stress and strain of components with complex morphology, structure, material and loading condition, with the advantages of comprehensive mechanical properties, repeatability, high-level controllability, etc. In this paper, the characteristics of several kinds of commonly used ifnite element analysis softwares are introduced, and the research results of ifnite elementmethod in artiifcial disc replacement and the effects of artiifcial disc implantation on spinal biomechanics are summarized. When compared with in vitro experiment, the finite element method has its own advantages and disadvantages. It is thought that more meaningful results can be achieved through the effective combination of in vitro experiment and ifnite elementmethod. The ifnite elementmethod can help paramedical personnel learn more about the biomechanics of complex components after artiifcial disc replacement, which also provides a valuable reference for the surgical treatment.