CAJ | 학술논문

目的：建立上颈椎不稳的三维有限元模型，并探索其临床治疗的意义。方法首先建立上颈椎正常的三维非线性有限元模型，在此基础上结合临床上的颈椎不稳病例，通过有限元软件的应用，建立上颈椎不稳的三维有限元模型并进行有限元分析。在屈、伸、侧屈、旋转等工况下，测量并比较上颈椎脱位模型与正常上颈椎模型的活动度(ROM)差异。结果所建上颈椎有限元模型外观清晰逼真，几何相似性良好。上颈椎不稳模型各个工况下的活动度与正常上颈椎模型相比明显增大，与体外生物力学实验结果基本吻合。结论有限元三维模型的建立提供了一种便捷而精确的方法。上颈椎不稳的非线性三维有限元模型能够较好地模拟临床病例，从而指导制定临床治疗策略。
목적：건립상경추불은적삼유유한원모형，병탐색기림상치료적의의。방법수선건립상경추정상적삼유비선성유한원모형，재차기출상결합림상상적경추불은병례，통과유한원연건적응용，건립상경추불은적삼유유한원모형병진행유한원분석。재굴、신、측굴、선전등공황하，측량병비교상경추탈위모형여정상상경추모형적활동도(ROM)차이。결과소건상경추유한원모형외관청석핍진，궤하상사성량호。상경추불은모형각개공황하적활동도여정상상경추모형상비명현증대，여체외생물역학실험결과기본문합。결론유한원삼유모형적건립제공료일충편첩이정학적방법。상경추불은적비선성삼유유한원모형능구교호지모의림상병례，종이지도제정림상치료책략。
Objective To establish the three-dimensional finite element model of atlantoaxial instability and explore its clinical significance. Methods By first establishing the three-dimensional nonlinear finite element model of the normal upper cervical spine, on the basis of which clinical cases of cervical vertebra instability were combined, the three-dimensional finite element model of the up-per cervical instability was established and finite element analysis was carried out through the application of the finite element software. In flexion, extension, lateral flexion, rotation and other conditions, the differences of activity between normal model and dislocation model were measured and compared. Results The established finite element model was clear in appearance and had good geometric similarity. The activity of the upper cervical instability model was increased apparently compared with the normal upper cervical spine model, which was consistent with the in vitro biomechanical experimental results. Conclusion The establishment of the three-dimen-sional finite element model provides a convenient and accurate method. The nonlinear three-dimensional finite element model of upper cervical instability can better simulate the clinical cases, so as to guide the clinical treatment strategy.