1. Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China丨 2. Department of Neurosurgery, Civil Aviation General Hospital, Beijing 100123, China丨 3. Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing 100054, China丨 4. a. School of Biomedical Engineering丨 b. Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China
Abstract：Objective The effects of the three treatment methods of semi-laminectomy, laminectomy, and lamina reimplantation on the stability of the cervical spine were investigated. Methods Three-dimensional finite element model of the normal intact state of the C3-C6 motion segment of the sheep cervical spine and the state of the lamina replantation was established respectively based on CT image. The finite element model of normal and complete state was cut, and the finite element model of semi-laminectomy and total laminectomy were established. The finite element method was employed to simulate the biomechanical properties of the four models under the loads of flexion，extension, left lateral bending and right lateral bending. Results The maximum stress of intervertebral disc and facet joint in total laminectomy and hemilaminectomy was greater than that in normal intact state under the four loads of flexion, extension, left and right lateral bending. The maximum stress in total laminectomy was greater than that in hemi-laminectomy. Laminoplasty can significantly reduce the stress increase of intervertebral disc and facet joints in sheep after total laminectomy. Conclusion Laminectomy and hemi-laminectomy will reduce the stability of the cervical spine and the laminectomy will have a greater impact on the stability of the cervical spine. Laminoplasty can effectively reduce the impact of total laminectomy on the stability of cervical spine.
常玉婷1，黄勇2，菅凤增3，张璨3，黄菊英4a,4b. 基于CT影像的羊颈椎椎板切除的生物力学特征仿真计算方法研究[J]. 中国医疗设备, 2021, 36(10): 157-160.
CHANG Yuting1，HUANG Yong2，JIAN Fengzeng3，ZHANG Can3，HUANG Juying4a,4b. Study on Simulation Calculation Method of Biomechanical Characteristics of Sheep Cervical Laminectomy Based on CT Image. China Medical Devices, 2021, 36(10): 157-160.
