The Finite Element Analysis And Clinical Evaluation Of Reconstruct The Cervical Stability After Cervical Spine Tumor Resection Involved One Side Zygapophysial Joints

Objective: 1. To establish the cervical vertebra 4 ~ 6' s normal three-dimensional finite element model and half lateral mass plate reconstruction and double lateral mass plate reconstruction after cervical spine tumor resection involved one side zygapophysial joints. 2. Utilization the finite element model to run biomechanics analysis, evaluation the stability of both methods of reconstruction. 3. To analyze 18 cases' clinical data and follow-up data, evaluation the curative effect of both methods of reconstruction. Methods 1. Modeling part : We selected the normal adult' s cervical vertebra 4～6' s CT image, utilize the Material Mimics software to establish the three-dimensional model. According the numerical data of cervical vertebra 4 ～ 6, utilize computer aided design software— Unigraphics NX to establish the normal cervical finite element model, according the numerical data of cervical vertebral 4/5 and 5/6 intervertebral discs, to establish the intervertebral disc' s finite element model, then according to the general operational method , modified the normal cervical vertebral model to establish the pathological model. In this study, we established two kinds of pathological models, one is half lateral mass plate fixation after tumor resection, the other is both lateral mass plate fixation after tumor resection.2. Biomechanical analysis: We put the three finite element models after propriety modification into the three-dimensional finite element...