本文選題：股骨 + 假體柄��； 參考：《華僑大學》2017年碩士論文

【摘要】：人體髖關節(jié)病變、事故致使關節(jié)功能受損或喪失,會給人們工作和生活帶來極大的痛苦和不便,而全髖置換手術是解決這一問題的非常有效的辦法,目前在臨床治療中被廣泛采納和應用。在全髖置換手術中,與股骨接觸的部件是假體柄,它是關節(jié)反力的主要受力部件,關節(jié)反力通過假體柄傳遞給股骨,對整個植入關節(jié)起著固定作用,是人工髖關節(jié)的重要部件。研究假體柄內部幾何形狀對股骨和假體柄應力分布的影響,對設計應力遮擋效應低的假體具有重要的意義和價值。論文以健康股骨以及術后股骨系統(tǒng)為研究對象,探索內部結構不同的柄植入股骨后的應力分布情況,并對其進行綜合比較,找出應力效應低的結構,并對該結構進行了調整參數(shù)的優(yōu)化設計。具體研究內容如下:(1)運用Mimics、Geomagic Studio、UG軟件,針對某一健康股骨的CT掃描數(shù)據(jù),建立股骨的三維實體模型。運用UG的高級仿真有限元功能,模擬兩種生物力學環(huán)境下,健康股骨的應力分布情況。(2)依據(jù)Mimics軟件測量的股骨上段幾何數(shù)據(jù),確定柄的外輪廓尺寸參數(shù);運用UG的二次開發(fā)技術,結合C/C++程序設計語言,對內部結構為實心、圓柱通孔、矩形腔的三種柄結構進行參數(shù)化建模;在UG中,模擬全髖置換手術,建立三種柄的術后模型。以達到根據(jù)實際情況快速修改柄的尺寸參數(shù),重建柄模型的目的。(3)首先,應用有限元分析方法及UG NX的高級仿真模塊,模擬在單足靜止站立、45%步態(tài)時刻兩種生物力學環(huán)境下三種柄的術后模型應力分布情況,并將其應力分布結果與健康股骨進行對比分析,得出了內部結構為矩形腔的柄應力遮擋效應最低的結論。然后,對矩形腔柄進行調整參數(shù)方式的優(yōu)化設計,得到應力遮擋效應低且應力分布更加合理的矩形腔柄結構。本課題探索了假體柄的生物力學分析和結構設計方法,可為假體柄的快速優(yōu)化設計提供參考。
[Abstract]:The human hip joint disease, the accident causes the joint function to be damaged or loses, will bring the great pain and the inconvenience to the people's work and the life, but the total hip replacement surgery is the very effective method to solve this problem. At present, it is widely adopted and applied in clinical treatment. In total hip arthroplasty, the part in contact with the femur is the prosthetic handle, which is the main force component of the joint reaction. The joint reaction force is transmitted to the femur through the prosthetic handle, which plays a fixed role on the whole implanted joint and is an important part of the artificial hip joint. It is of great significance and value to study the influence of the internal geometry of the prosthetic handle on the stress distribution of the femur and the prosthesis handle. It is of great significance and value to design the prosthesis with low stress occlusion effect. In this paper, the healthy femur and the postoperative femur system were taken as the research object to explore the stress distribution of the femur with different internal structures, and to find out the structure with low stress effect. The optimized design of adjusting parameters is carried out for the structure. The specific research contents are as follows: (1) the 3D solid model of femur is established by using the software of Mimicsl Geomagic Studio UG and the CT scan data of a healthy femur. Using the advanced simulation finite element function of UG to simulate the stress distribution of the healthy femur under two biomechanical environments. (2) according to the geometry data of the upper femur measured by Mimics software, the outer contour dimension parameters of the handle are determined. By using the secondary development technology of UG and C / C programming language, parameterized modeling of three kinds of shank structures with solid internal structure, cylindrical through hole and rectangular cavity is carried out. In UG, the operation of total hip replacement is simulated and the postoperative model of three kinds of shanks is established. In order to quickly modify the size parameters of the shank and reconstruct the shank model according to the actual situation, firstly, the finite element analysis method and the advanced simulation module of UG NX are used. The stress distribution of three kinds of hilts in two biomechanical environments at 45% gait time was simulated, and the stress distribution results were compared with those of healthy femur. It is concluded that the shank stress occlusion effect with rectangular cavity is the lowest. Then, the optimization design of adjusting the parameters of the rectangular cavity shank is carried out, and the rectangular cavity shank structure with low stress shielding effect and more reasonable stress distribution is obtained. In this paper, the biomechanical analysis and structural design method of prosthesis handle are explored, which can provide reference for rapid optimization design of prosthesis handle.
【學位授予單位】：華僑大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：R687;R318.1

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