机翼型Ni-Ti合金固定峡部裂对椎间盘的影响

王健; 朱立新; 杨慧; 古钦文; 彭道琥; 李森

doi:10.13418/j.issn.1001-165x.2018.06.015

中国临床解剖学杂志 ›› 2018, Vol. 36 ›› Issue (6) : 674-677. DOI: 10.13418/j.issn.1001-165x.2018.06.015

临床生物力学

机翼型Ni-Ti合金固定峡部裂对椎间盘的影响

王健¹，　朱立新²，　杨慧¹，　古钦文¹，　彭道琥¹，　李森¹

作者信息 +

Impact of fixiation spondylolysis using the aerofoil–shaped Ni-Ti alloy on the intervertebral disc

WANG Jian¹, ZHU Li-xin²，YANG Hui¹，GU Qin-wen¹，PENG Dao-hu¹，LI Sen¹

Author information +

文章历史 +

摘要

目的　在自制机翼型Ni-Ti合金固定器基础之上，建立腰椎峡部裂内固定的有限元模型，分析其对椎间盘的影响。方法　CT数据建立腰椎峡部裂模型，数字装配固定器，测算人体各工况下椎间盘应力峰值及分布。结果　在前屈、后伸、左侧屈和左旋转工况下，患椎间盘的最大应力值分别增加到105%、102%、101%和111%，在使用机翼型Ni-Ti合金内固定技术重建后，患椎间盘最大应力值分别减少至67%、55%、88%和83%。结论　机翼型Ni-Ti合金固定器构造特别，可有效减少同节段及相邻节段的椎间盘应力，防止椎间盘远期退变，具备良好的生物力学特性，有望进入临床应用，为腰椎峡部裂的治疗提供更多的选择。

Abstract

Objective　Application of Ni-Ti alloy fixation (AEROFOIL FIXATION) in spondylolysis has been successful. The aim of this study was to analyze its impact on the intervertebral disc using the finite element model.　Methods　A three-dimensional non-linear finite element(FE) model of spondylolysis has been developed. Von Mises stresses and distributions of intervertebral disc were analyzed in flexion, extension, left lateral bending and left axial rotation.　Results　Under different conditions, the maximum stresses of affected disc were increased to 105%、102%、101% and 111%，respectively. After direct repair by AEROFOIL FIXATION technique, the affected disc stresses decreased to 67%, 55%, 88% and 83%, respectively.　Conclusions AEROFOIL FIXATION, due to its reasonable structure and excellent biomechanical properties that can prevent the anterior degeneration intervertebral disc and, should be promoted in clinical application, providing another choice for the treatment of lumbar spondylolysis.

导出引用

王健,朱立新,杨慧,古钦文,彭道琥,李森. 机翼型Ni-Ti合金固定峡部裂对椎间盘的影响[J]. 中国临床解剖学杂志. 2018, 36(6): 674-677 https://doi.org/10.13418/j.issn.1001-165x.2018.06.015

WANG Jian, ZHU Li-xin，YANG Hui，GU Qin-wen，PENG Dao-hu，LI Sen. Impact of fixiation spondylolysis using the aerofoil–shaped Ni-Ti alloy on the intervertebral disc[J]. Chinese Journal of Clinical Anatomy. 2018, 36(6): 674-677 https://doi.org/10.13418/j.issn.1001-165x.2018.06.015

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