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研究生:周致宇
研究生(外文):Chih-yu Chou
論文名稱:模組化人工關節整合分析及身高體重影響
論文名稱(外文):Integration of Modular Prosthesis Analysis and Effect of Patient Weight and Height
指導教授:陳炤彰陳炤彰引用關係
指導教授(外文):Chao-chang A.Chen
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:108
中文關鍵詞:人工關節骨骼建立簡化力學模型電腦輔助應力分析身高體重
外文關鍵詞:prosthesisbuilding skeletonsimplified mechanics modelComputer aided engineeringheightweight
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本研究的目的在於建立模組化人工關節的分析與設計流程,包含人工關節植入骨柄(Stem)在股骨植入軸向之定義及建構股骨植入物模型(Bone-Prosthesis Model, BPM)流程,並且推導簡化力學模型,比對近端股骨植入有限元素分析的結果,同時配合末端股骨植入相關病例的X片,驗證末端股骨植入有限元素分析結果,然後根據近端股骨植入有限元素分析,改變體重和身高,配合不同的植入骨柄直徑分別得到植入骨柄及密質骨最大von Mises應力的迴歸方程式。本研究由近端和末端股骨植入分析結果,可以了解BPM應力的分佈情形及最大應力的位置,做為以後人工關節設計參數的參考,使人工關節應力適當分佈於密質骨,增進手術後復原情況。近端股骨植入之身高體重變化分析結果與所得迴歸方程式,可推知本研究案例在骨柄直徑到達13mm以上,就減少植入骨柄發生斷裂機會,因此臨床上可協助了解身高體重變化與接受股骨植入物發生破壞之可能位置與應力分佈。本研究所發展之病人股骨與植入骨柄實體模型建構及分析流程,未來也可應用於膝關節和肩關節之分析與設計。
The research is to establish the design and analysis processes of modular joint with prosthesis for femur, including the construction of bone-prosthesis model (BPM) with an inclined angle between axial directions of stem and femur, and the finite element analysis. The 3-D bone-visual model (BVM), bone-solid model (BSM) and BPM have been defined and used to integrate with the finite element analysis (FEA). A simplified mechanics model has been developed and compared with that of the result of FEA of the BPM with near femur implant. Another FEA result of BPM with distal femur implant has also been investigated and verified with an X-ray image of clinical case. Based on the FEA results of the BPM with near femur implant, different body weight and height have been simulated and analyzed with variant diameter of implant stems. Regression models of maximum von Mises stress of prosthesis and cortical bone have been constructed to forecast the stress distribution of stem and cortical bone. In this research, the lower chance of stem failure is obtained when the stem diameter is larger than 13mm. Therefore, stress distribution and the location of the maximum von Mises stress of cortical bone or stem in BPM can clinically be used to assist in selecting appropriate implant for patient of different body height and weight. Furthermore, the developed method can be applied to implants related to other joints, including knee joint and shoulder joints.
摘要…........…………………………………………………...…………..I Abstract……………………………………………………...….…….. II
誌謝…………………………………………………………..….…….. VI
目錄……………...…………………………….………………….……..V
圖目錄……………………………………….……………………... VIII
表目錄……………………………………….………………………. IX
第一章 緒論…………………………………………………………1
1.1 前言……………………………………………………………1
1.2 研究動機與目的………………………………………………2
1.3 股骨構造說明………………..………………………………..3
1.4 訂製式人工關節…………….………………………………5
1.5 文獻回顧……………………………………………………....6
1.5.1 人工關節的發展…….……………………………….…6
1.5.2 有限元素於醫學分析的應用…………………………..7
1.5.3 CT影像的發展及在有限元素分析上的應用………….8
1.5.4 實驗室相關文獻回顧…….………………………….…9
1.6 研究方法……………………………………………………..10
1.7 章節介紹……………………………………………………..11
第二章 股骨與植入物實體模型的建構流程………………………..12
2.1 3D視覺模型的建立………………………………………..13
2.1.1 股骨視覺模型的建立……...………….………………13
2.1.2 膝關節及軟組織附著的視覺模型建立………………16
2.2 股骨實體模型的建立………………………………………..20
2.2.1 以SolidWorks 建構骨頭實體模型……...……………20
2.2.2 以Pro-E建構骨頭實體模型…………………………23
2-3 人工關節實體模型建立……………………………………..27
2.4 實體模型定位及人工關節植入定義………………………..31
2.4.1 股骨的定位及人工關節的結合…….….……………32
2.4.2 脛骨模型與Implant結合及軟組織附著探討…….…..35
2-5 Amira輸入CAD尺寸確定…………………………………..41
第三章 有限元素分析流程說明及驗證……………………………..44
3.1 人工髖關節植入股骨的簡化力學模型建構………………..44
3.2 破壞準則- von Mises 降伏準則…………………………..48
3.3 有限元素分析流程說明……………………………………..53
3.3.1 模型輸入及材料設定…….…………………………53
3.3.2 模型布林運算-黏合、網格化………………………....55
3.3.3 模型之負荷與邊界條件………………………………57 VI
3.3.4 有限元素分析結果及其合理性…….….……………58
3.4 有限元素分析驗證…………………………………………..62
3.4.1 簡化力學模型與有限元素分析比較…………………62
3.4.2 有限元素分析結果與病例X光片比較………....……64
第四章 身高體重的變化對人工髖關節植入股骨的影響研究……..67
4.1 分析的參數設定……………………………………………..67
4.2 分析的結果數據與探討……………………………………..71
第五章 結果與討論………………………..……………………79
5.1 股骨與植入物實體模型的建構流程………………………..79
5.2 有限元素分析流程說明及驗證……………………………..80
5.3 身高體重的變化對人工髖關節植入股骨的影響研究……..81
第六章 結論與建議…………………………………………………85
6-1 結論………………………………………………………..85
6-2 建議………………………...………………………………..85
參考文獻………………………………..………………………………87
附錄 A ………………………………………………………………..92
附錄 B …………………………………………………………………97
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