颈椎前路微型记忆加压合金板的有限元分析  

Finite element analysis of anterior cervical micro-memory compression alloy plate

作　　者：仝铃 许阳阳 王一丹 马渊 王海燕[4] 李筱贺[4] Tong Ling;Xu Yangyang;Wang Yidan;Ma Yuan;Wang Haiyan;Li Xiaohe(Graduate School of Inner Mongolia Medical University,Hohhot 010000,China;Department of Rehabilitation,Changzhi People's Hospital,Changzhi 046000,Shanxi Province,China;Digital Medicine Center,School of Basic Medicine,Inner Mongolia Medical University,Hohhot 010000,China;Department of Human Anatomy,Inner Mongolia Medical University,Hohhot 010000,China)

机构地区：[1]内蒙古医科大学研究生学院,呼和浩特010000 [2]长治市人民医院康复科,山西长治046000 [3]内蒙古医科大学基础医学院数字医学中心,呼和浩特010000 [4]内蒙古医科大学人体解剖教研室,呼和浩特010000

出　　处：《中国临床解剖学杂志》2022年第3期320-326,共7页Chinese Journal of Clinical Anatomy

基　　金：国家自然科学基金(81460330,81860383,81560348,81260269);内蒙古自然科学基金(2020MS08124,2020LH08021,2016MS08131);内蒙古医科大学后续科研项目(2020);内蒙古医科大学科技成果转化项目;内蒙古财政厅科技引导项目(2017);内蒙古教育厅青年科技英才项目(njyt-15-b05);内蒙自治区科技计划项目(2016,2019GG115);内蒙古自治区科技创新引导项目(2017);内蒙古人社厅归国留学人员基金;2020年度内蒙古自治区“草原英才”工程青年创新创业人才;2022年度自治区卫生健康科技计划项目(202201188)。

摘　　要：目的评估微型记忆加压合金板在前路颈椎椎间盘切除融合术中置入后的生物力学性能,为该内植物的临床应用、术后护理及后续实验研究与改进提供依据。方法随机选择一名健康成年女性志愿者,建立C_(5)、C_(6)颈椎-微型记忆加压合金板三维有限元模型,对各工况下内植物上应力集中区域的应力分布情况进行比较分析。结果中立位时,该内植物上分布的应力相对较为均匀且应力值较小;前屈状态时,各个区域的平均应力相对其余工况均为最大,最大平均应力位于区域6即下钩部分,为(45.89±5.32)MPa;后伸状态时,区域1、2、3、4即加压部件的应力分布较为均匀(P>0.05);侧屈工况下,该内植物整体应力分布不均,屈侧平均应力远大于伸侧(P<0.05);旋转工况下,应力在旋转对侧上部与同侧下部较为集中,左旋转时分别为(23.66±6.24)MPa和(23.62±7.07)MPa,右旋转时分别为(24.16±5.42)MPa和(24.58±5.30)MPa。除中立位外,在其余六种工况下,置入椎体内部的上下钩固定部分受到的应力均较大。结论颈前植入该微型记忆加压合金板后,应减少做前屈动作,避免过于频繁或过于激烈的侧屈、旋转动作,保持中立位最为稳妥。在后续研究及改良过程中,可考虑加强内植物上下钩的固定强度。Objective To evaluate the biomechanical properties of the micro memory compression alloy plate(GYZ memory alloy plate)after anterior cervical discectomy and fusion,so as to provide basis for clinical application,postoperative care,and follow-up experimental research and improvement of the implant.Methods Three dimensional finite element models of C_(5),C_(6) cervical vertebrae and miniature memory compression alloy plate were established in a healthy adult female volunteer.The stress distribution of the stress concentration area on the endophyte under different working conditions was compared and analyzed.Results In the neutral position,the stress distribution on the plant was relatively uniform and the stress value was small.In the forward bending state,the average stress of each area was the largest relative to the other working conditions,and the maximum average stress was located in region 6,namely the lower hook part,which was(45.89±5.32)MPa.In the extension state,the stress distribution of regions 1,2,3 and 4,that is,the pressurized parts,was more uniform(P>0.05).Under lateral flexion condition,the stress distribution of the implant was uneven,and the average stress of the flexion side was much higher than that of the extension side(P<0.05).Under the rotating condition,the stress was concentrated in the upper part of the opposite side and the lower part of the same side.Under the condition of left rotation,they were(23.66±6.24)MPa and(23.62±7.07)MPa.Under the condition of right rotation,they were(24.16±5.42)MPa and(24.58±5.30)MPa.Except for the neutral position,under the other six working conditions,the upper and lower hooks placed inside the vertebral body were subject to greater stress.Conclusions After the micro memory compression alloy plate is implanted in the front of the neck,it is necessary to reduce forward bending,avoid too frequent or too intense lateral bending and rotating movements,and it is safest to maintain a neutral position.In the follow-up research and improvement process,it can be

关 键 词：颈前路钢板 记忆合金板 有限元分析 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程] R687.32[医药卫生—基础医学]