| 角度人工椎间盘置换后对相邻下位椎间隙应力的影响 |
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Received:January 15, 2014
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| 作者 | Author | 单位 | Unit | E-Mail |
| 柏传毅 |
BAI Chuan-yi |
西安交通大学医学院第二附属医院骨一科, 陕西 西安 710004 |
The First Department of Orthopaedics, the Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China |
baichuanyiys@sina.com |
| 张维杰 |
ZHANG Wei-jie |
西安交通大学医学院第二附属医院骨一科, 陕西 西安 710004 |
The First Department of Orthopaedics, the Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China |
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| 卫文博 |
WEI Wen-bo |
西安交通大学医学院第二附属医院骨一科, 陕西 西安 710004 |
The First Department of Orthopaedics, the Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China |
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| 凌伟 |
LING Wei |
西安交通大学航天航空学院, 陕西 西安 710004 |
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| 田振兴 |
TIAN Zhen-xing |
西安交通大学航天航空学院, 陕西 西安 710004 |
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| 党晓谦 |
DANG Xiao-qian |
西安交通大学医学院第二附属医院骨一科, 陕西 西安 710004 |
The First Department of Orthopaedics, the Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China |
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| 王坤正 |
WANG Kun-zheng |
西安交通大学医学院第二附属医院骨一科, 陕西 西安 710004 |
The First Department of Orthopaedics, the Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China |
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| 期刊信息：《中国骨伤》2014年27卷，第9期，第756-761页 |
| DOI：10.3969/j.issn.1003-0034.2014.09.011 |
| 基金项目:陕西省科技攻关资助项目[编号：2007k14-01（2）] |
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目的：探讨带角度人工颈椎间盘置换后椎间隙及相邻椎间隙应力变化。
方法：根据已有的测量结果，设计角度人工椎间盘。对已建立的C4，5两节段带椎间盘的正常颈椎有限元模型、C4，5置换0°椎间盘假体和置换10°椎间盘假体后的颈椎模型进行轴向加压、前屈/后伸、侧弯、扭转加载，对比观察C4，5椎间隙应力变化；对已建立的C4-C6 3节段带椎间盘的正常颈椎有限元模型、C4，5置换0°椎间盘假体和置换10°椎间盘假体后的颈椎模型同样方式进行加载，对比置换节段及相邻节段的椎间隙应力变化。
结果：C4，5两节模型加载中，轴向加载、前屈/后伸时80 MPa/0°假体与80 MPa/10°假体等效剪应力（Se）大小近似，较正常颈椎增大，侧弯时80 MPa/0°假体Se与正常颈椎接近，80 MPa/10°假体Se较正常颈椎增大。扭转时加载时扭转切应力（Szx/Szy）80 MPa/0°假体和80 MPa/10°假体接近正常颈椎。在C4-C6 3节段模型加载时，C4，5椎间隙置换80 MPa/10°假体后，轴向加载、前屈后伸、侧弯时，相邻下位节段（C5，6）的椎间隙Se均减小，扭转加载时Szx/Szy接近正常颈椎模型。
结论：10°椎间盘假体植入椎间隙对颈椎相邻节段的椎间隙应力影响小，接近正常颈椎间盘力学性能。 |
| [关键词]:颈椎 椎间盘 生物力学 |
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| Effects of artificial disc replacement with angles on stress of adjacent intervertebral disc |
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Abstract:
Objective: To evaluate stress changes of intervertebral space and adjacent intervertebral space after artificial disc replacement with angles.
Methods: Artificial disc replacement with angles were designed according to existing data. Axial pressure, flexion/extension, lateral bending and torsion loading were applied on finite element models of normal cervical discs on C4, 5 segments, C4, 5 segments with 0°artificial cervical discs and C4, 5 segments with 10°artificial cervical discs, then stress changes of C4, 5 space was observed. The same loadings were applied on finite element models of normal cervical discs on C4-C6 segments, C4, 5 segments with 0°, C4, 5 segments with 10°, then stress changes of replaced segments space and adjacent segment space were observed.
Results: For C4, 5 segments, 80 MPa/0°artificial discs and 80 MPa/10°artificial discs had the similar equivalent shear stress(Se), and were both larger than that of normal discs, when lateral bending were performed, 80 MPa/0°artificial discs were closed to normal discs when axial pressure and flexion/extension were carried out, while 80 MPa/10°artificial discs had a larger Se than that of normal ones, when torsion loading were applied, Szx/Szy stress of 80 MPa/0°and 80 MPa/10°artificial discs were closed to normal ones. For C4-C6 segments, the axial pressure, flexion/extension and lateral bending of C5, 6 were all lower than normal discs after C4, 5 discs were replaced by 80 MPa/10°artificial discs, while Szx/Szy of torsion loading were closed to normal ones.
Conclusion: Artificial discs with 10° have less influences on stress of adjacent intervertebral space and closer to mechanical property after being implanted into intervertebral space. |
| KEYWORDS:Cervical vertebrae Intervertebral disk Biomechnics |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 柏传毅,张维杰,卫文博,凌伟,田振兴,党晓谦,王坤正.角度人工椎间盘置换后对相邻下位椎间隙应力的影响[J].中国骨伤,2014,27(9):756~761 |
| 英文格式: | BAI Chuan-yi,ZHANG Wei-jie,WEI Wen-bo,LING Wei,TIAN Zhen-xing,DANG Xiao-qian,WANG Kun-zheng.Effects of artificial disc replacement with angles on stress of adjacent intervertebral disc[J].zhongguo gu shang / China J Orthop Trauma ,2014,27(9):756~761 |
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