中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (11): 1731-1736.doi: 10.3969/j.issn.2095-4344.0171

• 数字化骨科 digital orthopedics • 上一篇    下一篇

个性股骨假体的三维仿真及模拟力学试验

李 亢1,姜 燕2,田大为3,刘向阳2   

  1. 1十堰市太和医院,湖北医药学院附属医院骨科,湖北省十堰市  4420002湖北医药学院计算机教研室,湖北省十堰市 442000;3湖北医药学院附属东风医院骨科,湖北省十堰市 442000
  • 出版日期:2018-04-18 发布日期:2018-04-18
  • 通讯作者: 姜燕,硕士,副教授,湖北医药学院计算机教研室,湖北省十堰市 442000
  • 作者简介:李亢,男,1975年生,四川省成都市人,汉族,2005年俄罗斯圣彼得堡巴甫洛夫国立医科大学毕业,硕士,副主任医师,副教授,主要从事骨创伤与整形、显微骨科、计算机辅助骨科临床应用方面的研究。
  • 基金资助:

    湖北省科技计划项目(2015CFC808),课题名称:个性股骨假体的三维仿真及移植的研究

Three-dimensional simulation and simulated mechanical test of individual femoral prosthesis

Li Kang1, Jiang Yan2, Tian Da-wei3, Liu Xiang-yang2   

  1. 1Department of Orthopedics, Taihe Hospital of Shiyan, Hubei University of Medicine, Shiyan 442000, Hubei Province, China; 2Computer Teaching and Research Office, Hubei University of Medicine, Shiyan 442000, Hubei Province, China; 3Department of Orthopedics, Dongfeng Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • Online:2018-04-18 Published:2018-04-18
  • Contact: Jiang Yan, Master, Associate professor, Computer Teaching and Research Office, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • About author:Li Kang, Master, Associate chief physician, Associate professor, Department of Orthopedics, Taihe Hospital of Shiyan, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • Supported by:

    a grant from the Science and Technology Program of Hubei Province, No. 2015CFC808

摘要:

文章快速阅读:



文题释义:
骨水泥型假体:骨水泥型假体于20世纪60年代Charnley提出应用,近年来,人工关节置换的临床效果大为提高,临床效果确切,有大量成功的病例,目前仍在广泛使用,操作技术已经非常成熟。应用骨水泥假体的患者康复时间相对短,在美国已成为全膝关节置换假体固定的金标准。然而,也有临床案例表明骨水泥型假体容易出现假体松动和磨损,从而影响其长期耐用性。
髋关节病变:在髋臼的边缘有关节盂缘附着,加深了关节窝的深度。在髋臼切迹上横架有髋臼横韧带,并与切迹围成一孔,有神经、血管等通过。髋关节病变常为隐匿起病,早期症状不典型,可为单侧或双侧髋关节间断疼痛,不引起人们的关注,但腱端炎和滑膜炎正在不断的发展。当出现明显的髋关节疼痛甚至活动受限时,髋关节软骨已有破坏、关节间隙已狭窄。
 
摘要
背景:有研究将医用CT技术与数字化三维影响交互式控制系统Mimics软件以及计算机仿真技术等工具软件相结合重建活体股骨三维模型,并进行仿真再造,专门定制的个性化股骨假体与人体结构具有较高的匹配度,在临床研究上具有较高的应用价值。
目的:探究个性股骨假体的三维仿真及移植在人工股骨假体置换中的应用价值。
方法:选择2014年7月至2016年6月在十堰市太和医院拟行人工股骨假体置换的患者82例,按随机数表法分为3组,各组分别设计不同类型的股骨假体,个性化组28例,普通生物型组27例,骨水泥型组27例,分别进行股骨假体三维仿真及模拟力学试验。采用医用CT技术结合计算机辅助设计重建活体股骨三维模型,在计算机上虚拟假体模型的置入过程并记录相关信息,对股骨假体在双足及单足载荷下进行力学试验的模拟操作,为股骨假体置换提供最适宜的方案,并对可能出现的风险进行预测评估做好术前准备工作。
结果与结论:①3组在模拟力学试验中,双足与单足载荷下,假体置换后假体和股骨上应力情况比较,个性化组明显优于生物型组与骨水泥型组,差异有显著性意义(P < 0.05);②假体置换后的正应力与剪切应力,个性化组明显优于生物型组与骨水泥型组,差异有显著性意义(P < 0.05);③假体置换后假体的初始微动情况,水平微动与垂直微动个性化组明显优于生物型组与骨水泥型组,差异有显著性意义(P < 0.05);④综上,联合计算机CT三维技术与计算机辅助设计等软件可以有效为患者定制个性化股骨假体,与生物型与骨水泥型假体相比,个性化股骨假体在各种性能上尤其是在生物力学层面其应力分布、界面应力、初始微动等都具有明显优势。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0002-9278-8813(李亢)

关键词: 股骨假体, 三维模型, 计算机辅助技术, 仿真, 移植, 人工假体, 骨科植入物

Abstract:

BACKGROUND: A study combined medical CT technology and digital three-dimensional (3D) interactive control system Mimics software and computer simulation software tools for 3D reconstruction and simulation reconstruction of the femur. Customized individualized femoral prosthesis has high matching degree with human body structure, and has high application value in clinical research.

OBJECTIVE: To investigate the application value of 3D simulation of femoral prosthesis in artificial femoral prosthesis replacement.
METHODS: Totally 82 cases, who received femoral prosthesis replacement from July 2014 to June 2016 in Taihe Hospital of Shiyan, were enrolled and randomly assigned to three groups: personalized group (n=28), cementless group (n=27) and cemented group (n=27). Different types of femoral prosthesis were designed in each group. 3D model reconstruction in femur was designed using medical CT technology combined with computer. Prosthesis implantation was simulated in computer, and the relevant information was recorded. Simulated operation was conducted on the mechanical experiment of femoral prosthesis in the biped and single foot loads so as to provide the most suitable operation plan. The possible risk was forecasted and assessed for preoperative preparation. 
RESULTS AND CONCLUSION: (1) In the simulation of mechanical experiment, under double foot and single foot loads, after prosthetic replacement, stress in the femur was significantly better in the personalized group than in the cementless group and cemented group (P < 0.05). (2) After replacement, normal stress and shear stress were significantly better in the personalized group than in the cementless group and cemented group (P < 0.05). (3) The initial, horizontal and vertical micromovement was significantly better in the personalized group than in the cementless group and cemented group (P < 0.05). (4) In summary, the use of computer technology and 3D CT software can make individualized femoral prosthesis for patients. Compared with the cementless and cemented prostheses, personalized prosthesis has obvious advantages in stress distribution, interface stress and initial micromovement. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Computer-Aided Design, Finite Element Analysis, Prosthesis Implantation, Tissue Engineering

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