生物骨科材料与临床研究2012，Vol.9Issue(1)：4-7,4.DOI:10.3969/j.issn.1672-5972.2012.01.002
以三维有限元分析多孔钽块植入治疗股骨头缺血性坏死的生物力学改变
Biomechanicai study and three-dimension finite element analysis on the treatment of the iscbemic necrisis of the femoral head using piece of tantalum
摘要
Abstract
Objective To study the biomechanics for the treatment of vascular necrosis of the femoral head by 3 different methods and to determine the most proper diameter and implant site. Methods Choose the right femur healthy adults as the research object, adult and CT scanning was conducted by 2mm interval to get the images of cross sections. The images were then inputted into computer to get contour of femur and rebuild 3D model .The hip joint reaction force of 1620N,the abductor muscle force of 1061N, the vastus lateralis muscle force of 1720N were applied according to the 3D space distribution of femur force under physiological state.The collapse areas of the weigh loading site femoral head models with pieces of Tantalum in different diameters in differernt implant sites were calculated. Results The stiffness of femoral head after memorial pieces of Tantalum planting was larger than that of goup 1( core decomprssion with bone grafting )cnd group 2( core decomprssion with bone and metal Tantalum great grafting Ibut there was not significant different between group 1 and group 2 with the increasing Angle necrosis. Conclution The piece of Tantalum implanting can increase mechanical support and ducrease the stress for femoral head. It can promise revascularization and new boen formation for nec-otic femoral head; With great implant bone graft in small range tantalum necrosis fashion has certain support functions, while larger necrosis after the femoral head cannot increase mechanical support; Tantalum metal piece of implant treatment group head of avascular necrosis obviously better than the metal tantalum implant group;The best diameter of tantalum use to treat ischemic necrosis of the femoral head is 0.5mm, The best position in the femoral head directly under load-ing the area cartilage board is located 0～3mm.关键词
股骨头缺血性坏死/钽块/生物力学/有限元法Key words
Sichemic necrosis of the femoral head/ Piece of Tantalum/ Biomechanics/ Finite element method分类
医药卫生引用本文复制引用
张怡元,冯尔宥,林飞太,陈日齐,苏君,王武炼,李平..以三维有限元分析多孔钽块植入治疗股骨头缺血性坏死的生物力学改变[J].生物骨科材料与临床研究,2012,9(1):4-7,4.基金项目
福州市科技计划项目(编号:2009-G-104) （编号:2009-G-104）
