CAJ | 학술논문

依据1例T_(12)椎体单纯压缩性骨折患者的210层Dicom 3.0标准的CT图片建立T_(12)椎体单纯压缩性骨折的有限元模型,在对建立模型的有效性进行验证后模拟过伸复位手法,约束L_2下端所有面,给T_(11)椎体上端一个纵向牵引力,分别于T_(11),T_(12),L_1椎骨棘突顶点给予一个方向垂直朝向椎体、大小为3,0 cm的位移.程序运算,读取前纵韧带的受力情况.建立了几何外型逼真、生物力学特性全面的胸腰段椎体压缩性骨折三维有限元模型,复位手法作用后前纵韧带由松弛变紧张,在不同过伸支点前纵韧带的受力不同.结果提示,过伸复位治疗胸腰椎压缩性骨折疗效确切,前纵韧带在骨折复位中发挥重要作用.利用有限元分析法研究传统手法的作用机制具有实验结果可靠、显示结果直观、节约资源以及手法模拟精确等优点.
의거1례T_(12)추체단순압축성골절환자적210층Dicom 3.0표준적CT도편건립T_(12)추체단순압축성골절적유한원모형,재대건립모형적유효성진행험증후모의과신복위수법,약속L_2하단소유면,급T_(11)추체상단일개종향견인력,분별우T_(11),T_(12),L_1추골극돌정점급여일개방향수직조향추체、대소위3,0 cm적위이.정서운산,독취전종인대적수력정황.건립료궤하외형핍진、생물역학특성전면적흉요단추체압축성골절삼유유한원모형,복위수법작용후전종인대유송이변긴장,재불동과신지점전종인대적수력불동.결과제시,과신복위치료흉요추압축성골절료효학절,전종인대재골절복위중발휘중요작용.이용유한원분석법연구전통수법적작용궤제구유실험결과가고、현시결과직관、절약자원이급수법모의정학등우점.
Reconstructing the three-dimensional finite element model of compression fracture of T_(12) based on the 210-layer consecutive CT DICOM format images from one patient of compression fracture of T_(12) to simulate the hyperextending. Bound the lower of T_(12), a vertical traction at the top of T_(11)and a 3.0 cm-displacement toward the vertebra by three steps at the top of spinous process of T_(11), T_(12) and L_1 was provided. The procedure began computing to reed the results about dynamic biomechanical characteristics of anterior longitudinal ligament. A realistic appearance and full biomechanical properties 3D finite element model of thoracolumbar spine compression fracture was established. The anterior longitudinal ligament was changed from relaxation to tension after hyperextending. The stresses of anterior longitudinal ligament were different when the hyperextending fulcrum was different. The treatment effect of thoracalumbar spine compression fracture by hyperextending is exact. The anterior longitudinal ligament plays an important role in the treatment. Finite element analysis of mechanism of traditional practices has many advantages, such as reliable experimental results, direct displaying results, saving resources and accurate simulation.