骨盆定制假体的设计及有限元分析
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摘要
目的:介绍骨盆定制假体的设计,利用有限元分析方法评价骨盆肿瘤定制假体在3种不同工况下的生物力学性能。方法:利用CAD软件设计1例骨盆肿瘤患者重建所需的钛合金材质假体,用有限元法分析检查和评估该定制假体在静态和缓慢步态工况下的强度和刚度值。结果:有限元分析结果表明,3种工况下骨盆的最大Von Mises应力分别为39.0、202.8、42.4 MPa;最大位移分别为0.199、0.766、0.847 mm。假体中的最大Von Mises应力分别为62.3、318、468 MPa。骨盆和假体中的最大Von Mises应力都远低于相应材料的屈服强度。结论:该研究可以根据患者情况对定制假体的形状和尺寸做精确设计,通过有限元法强度计算可以降低骨骼应力水平和骨折风险,延长假体的使用寿命,保证了患者术后正常步态下的安全性和稳定性。
Objective:To introduce the design of customized pelvic prosthesis,to evaluate the biomechanical property under three load conditions of customized pelvic prosthesis under three load cinditions. Methods:A titanium alloy prosthesis for reconstruction of pelvic tumors was designed by CAD software. The strength and stiffness of the custom prosthesis under static and slow gait conditions were analyzed and evaluated by finite element method. Results:The results of the finite element analysis suggested that the maximum von Mises stress in the pelvic under three load conditions were 39.0,202.8 and 42.4 MPa;the maximum displacement were 0.199,0.766 and 0.847 mm. The maximum von Mises stress in the prosthesis under three load conditions were 62.3,318 and 468 MPa. The maximum Von Mises stress in the Ti-alloy prosthesis and pelvic was far smaller than the yield strength of Ti-alloy. Conclusion:The study can design the size and shape of prosthesis accurately according to patient's condition. The finite element method can reduce the bone stress level and fracture risk,prolong the service life of prostheses,and ensure the safety and stability of the postoperative patients under normal gait.
Objective:To introduce the design of customized pelvic prosthesis,to evaluate the biomechanical property under three load conditions of customized pelvic prosthesis under three load cinditions. Methods:A titanium alloy prosthesis for reconstruction of pelvic tumors was designed by CAD software. The strength and stiffness of the custom prosthesis under static and slow gait conditions were analyzed and evaluated by finite element method. Results:The results of the finite element analysis suggested that the maximum von Mises stress in the pelvic under three load conditions were 39.0,202.8 and 42.4 MPa;the maximum displacement were 0.199,0.766 and 0.847 mm. The maximum von Mises stress in the prosthesis under three load conditions were 62.3,318 and 468 MPa. The maximum Von Mises stress in the Ti-alloy prosthesis and pelvic was far smaller than the yield strength of Ti-alloy. Conclusion:The study can design the size and shape of prosthesis accurately according to patient's condition. The finite element method can reduce the bone stress level and fracture risk,prolong the service life of prostheses,and ensure the safety and stability of the postoperative patients under normal gait.
引文
[1]康志伟,张耀辉,杨自权.人工全髋关节翻修术中髋臼骨缺损的分类和重建[J].中国骨伤,2018,31(9):874-879.KANG ZW,ZHANG YH,YANG ZQ.Classification and reconstruction of acetabular defects in revision total hip arthroplasty[J].Zhongguo Gu Shang/China J Orthop Trauma,2018,31(9):874-879.Chinese with abstract in English.
[2]管晓东,郭毅伟,徐开怀,等.定制髋关节假体数字化设计与制造技术研究[J].机电工程,2017,34(3):256-259.GUAN XD,GUO YW,XU KH,et al.Digital design and manufacturing technology of customized hip prosthesis[J].Ji Dian Gong Cheng,2017,34(3):256-259.Chinese.
[3]刘小龙,王朝晖,熊波,等.基于CT及逆向工程软件构建正常人体骨盆三维有限元模型[J].中国组织工程研究,2014,18(40):6519-6523.LIU XL,WANG ZH,XIONG B,et al.Establishment of a normal adult’s pelvis three dimensional finite element model based on CTimage and reverse engineering method[J].Zhongguo Zu Zhi Gong Cheng Yan Jiu,2014,18(40):6519-6523.Chinese.
[4]Ji T,Guo W,Tang XD.Reconstruction of typeⅡ+Ⅲpelvic resection with a modular hemipelvic endoprosthesis:a finite element analysis study[J].Orthop Surg,2011,2(4):272-277.
[5]马文辉,张学敏,王继芳.有限元技术及其在人工髋关节领域的应用[J].中国骨伤,2011,24(4):349-352.MA WH,ZHANG XM,WANG JF.Technology of finite element analysis and its application in the field of acetabular prosthesis[J].Zhongguo Gu Shang/China J Orthop Trauma,2011,24(4):349-352.Chinese with abstract in English.
[6]王凯.三维有限元分析在骨科中的应用[J].生物骨科材料与临床研究,2013,10(1):31-34.WANG K.Three dimensional finite element analysis application in orthopaedics[J].Sheng Wu Gu Ke Cai Liao Yu Lin Chuang Yan Jiu,2013,10(1):31-34.Chinese.
[7]Brandi ML.Microarchitecture,the key to bone quality[J].Rheumatology(Oxford),2009,48(Suppl 4):iv3-8.
[8]靳安民,汪华侨.骨科临床解剖学[M].济南:山东科学技术出版社,2010.JIN AM,WANG HQ.Clinical Anatomy of Orthopaedic[M].Jinan:Shandong Science and Technology Press,2010.Chinese.
[9]胡畔.三维有限元分析比较3种内固定物对骨盆后环损伤的治疗效果[D].河北医科大学,2017.HU P.The comparison of various internal implants for stabilizing posterior pelvic ring disruption by three dimensional finite element analysis[D].Hebei Medical University,2017.Chinese.
[10]刘冬旭.可调式标准型半骨盆假体设计研发及其可靠性研究[D].上海大学,2016.LIU DX.Design and Biomechanical Study on a Novel Adjustable Standardized Hemipelvis Prosthesis[D].Shanghai University,2016.Chinese.
[11]汪光晔,张春才,禹宝庆,等.4种步态负载下髋臼记忆内固定系统治疗髋臼后壁骨折的三维有限元分析[J].中国骨伤,2007,20(7):448-451.WANG GY,ZHANG CC,YU BQ,et al.Three dimensional finite element analysis of acetabular tri dimensional memory fixation system(ATMFS)for the treatment of acetabular posterior wall fracture under four kinds of different gait conditions[J].Zhongguo Gu Shang/China J Orthop Trauma,2007,20(7):448-451.Chinese with abstract in English.
[12]刘玉增,王继芳,卢世璧,等.髋臼骨缺损和带翼髋臼翻修假体三维计算机模型的建立[J].解放军医学院学报,2005,26(1):44-45.LIU YZ,WANG JF,LU SB,et al.Construction of three dmiensional computer models of acetabular bone defect and special prostheses[J].Jie Fang Jun Yi Xue Yuan Xue Bao,2005,26(1):44-45.Chinese.
[13]田丰德,赵德伟,李东怡,等.髋臼缺损程度对成人髋关节应力影响的三维有限元分析[J].中国组织工程研究,2018,22(3):380-384.TIAN FD,ZHAO DW,LI DY,et al.Effect of acetabular defect on hip stress in adults:three dimensional finite element analysis[J].Zhongguo Zu Zhi Gong Cheng Yan Jiu,2018,22(3):380-384.Chinese.
[14]李宁,杨涵,黄秋悦,等.3D打印钛合金个性化骨盆假体静态和步态有限元分析[J].医用生物力学,2017,32(6):487-493.LI N,YANG H,HUANG QY,et al.Static and gait finite element analysis on individualized titanium alloy pelvic prosthesis manufactured by 3D printing[J].Yi Yong Sheng Wu Li Xue,2017,32(6):487-493.Chinese.
[15]周建华,王跃.有限元分析在骨科中的应用及研究进展[J].实用医院临床杂志,2018,15(1):205-208.ZHOU JH,WANG Y.The application and research prognosis of finite element analysis in orthopaedics[J].Shi Yong Yi Yuan Lin Chuang Za Zhi,2018,15(1):205-208.Chinese.
[2]管晓东,郭毅伟,徐开怀,等.定制髋关节假体数字化设计与制造技术研究[J].机电工程,2017,34(3):256-259.GUAN XD,GUO YW,XU KH,et al.Digital design and manufacturing technology of customized hip prosthesis[J].Ji Dian Gong Cheng,2017,34(3):256-259.Chinese.
[3]刘小龙,王朝晖,熊波,等.基于CT及逆向工程软件构建正常人体骨盆三维有限元模型[J].中国组织工程研究,2014,18(40):6519-6523.LIU XL,WANG ZH,XIONG B,et al.Establishment of a normal adult’s pelvis three dimensional finite element model based on CTimage and reverse engineering method[J].Zhongguo Zu Zhi Gong Cheng Yan Jiu,2014,18(40):6519-6523.Chinese.
[4]Ji T,Guo W,Tang XD.Reconstruction of typeⅡ+Ⅲpelvic resection with a modular hemipelvic endoprosthesis:a finite element analysis study[J].Orthop Surg,2011,2(4):272-277.
[5]马文辉,张学敏,王继芳.有限元技术及其在人工髋关节领域的应用[J].中国骨伤,2011,24(4):349-352.MA WH,ZHANG XM,WANG JF.Technology of finite element analysis and its application in the field of acetabular prosthesis[J].Zhongguo Gu Shang/China J Orthop Trauma,2011,24(4):349-352.Chinese with abstract in English.
[6]王凯.三维有限元分析在骨科中的应用[J].生物骨科材料与临床研究,2013,10(1):31-34.WANG K.Three dimensional finite element analysis application in orthopaedics[J].Sheng Wu Gu Ke Cai Liao Yu Lin Chuang Yan Jiu,2013,10(1):31-34.Chinese.
[7]Brandi ML.Microarchitecture,the key to bone quality[J].Rheumatology(Oxford),2009,48(Suppl 4):iv3-8.
[8]靳安民,汪华侨.骨科临床解剖学[M].济南:山东科学技术出版社,2010.JIN AM,WANG HQ.Clinical Anatomy of Orthopaedic[M].Jinan:Shandong Science and Technology Press,2010.Chinese.
[9]胡畔.三维有限元分析比较3种内固定物对骨盆后环损伤的治疗效果[D].河北医科大学,2017.HU P.The comparison of various internal implants for stabilizing posterior pelvic ring disruption by three dimensional finite element analysis[D].Hebei Medical University,2017.Chinese.
[10]刘冬旭.可调式标准型半骨盆假体设计研发及其可靠性研究[D].上海大学,2016.LIU DX.Design and Biomechanical Study on a Novel Adjustable Standardized Hemipelvis Prosthesis[D].Shanghai University,2016.Chinese.
[11]汪光晔,张春才,禹宝庆,等.4种步态负载下髋臼记忆内固定系统治疗髋臼后壁骨折的三维有限元分析[J].中国骨伤,2007,20(7):448-451.WANG GY,ZHANG CC,YU BQ,et al.Three dimensional finite element analysis of acetabular tri dimensional memory fixation system(ATMFS)for the treatment of acetabular posterior wall fracture under four kinds of different gait conditions[J].Zhongguo Gu Shang/China J Orthop Trauma,2007,20(7):448-451.Chinese with abstract in English.
[12]刘玉增,王继芳,卢世璧,等.髋臼骨缺损和带翼髋臼翻修假体三维计算机模型的建立[J].解放军医学院学报,2005,26(1):44-45.LIU YZ,WANG JF,LU SB,et al.Construction of three dmiensional computer models of acetabular bone defect and special prostheses[J].Jie Fang Jun Yi Xue Yuan Xue Bao,2005,26(1):44-45.Chinese.
[13]田丰德,赵德伟,李东怡,等.髋臼缺损程度对成人髋关节应力影响的三维有限元分析[J].中国组织工程研究,2018,22(3):380-384.TIAN FD,ZHAO DW,LI DY,et al.Effect of acetabular defect on hip stress in adults:three dimensional finite element analysis[J].Zhongguo Zu Zhi Gong Cheng Yan Jiu,2018,22(3):380-384.Chinese.
[14]李宁,杨涵,黄秋悦,等.3D打印钛合金个性化骨盆假体静态和步态有限元分析[J].医用生物力学,2017,32(6):487-493.LI N,YANG H,HUANG QY,et al.Static and gait finite element analysis on individualized titanium alloy pelvic prosthesis manufactured by 3D printing[J].Yi Yong Sheng Wu Li Xue,2017,32(6):487-493.Chinese.
[15]周建华,王跃.有限元分析在骨科中的应用及研究进展[J].实用医院临床杂志,2018,15(1):205-208.ZHOU JH,WANG Y.The application and research prognosis of finite element analysis in orthopaedics[J].Shi Yong Yi Yuan Lin Chuang Za Zhi,2018,15(1):205-208.Chinese.
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