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研究生:洪偉豪
研究生(外文):Wei-Hao Hong
論文名稱:髖關節發育異常之骨盆生物力學分析
論文名稱(外文):Biomechanical Analysis of Malformed Pelvis of DDH
指導教授:林啟禎林啟禎引用關係張志涵張志涵引用關係
指導教授(外文):Chii-Jeng LinChih-Han Chang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:醫學工程研究所碩博士班
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:74
中文關鍵詞:脫位步態分析有限元素法關節力生物力學髖關節發育異常異常髖關節骨盆
外文關鍵詞:pelvisFEMBiomechanicsdyplasiaDDHdislocationgait analysishiphip jointjoint forcecalculate
相關次數:
  • 被引用被引用:3
  • 點閱點閱:533
  • 評分評分:
  • 下載下載:109
  • 收藏至我的研究室書目清單書目收藏:3
摘要
髖關節發育異常(Developmental Dyplasia of the Hip : DDH)是在幼兒中常見的疾病。據美國臨床統計,每1000名新生兒就會有1-2位會發生先天性的DDH。DDH的成因非常複雜。可能是因為先天性的關節異常、或是關節的鬆脫、異常的肌肉拉力、股骨頭病變等。由於DDH隱含著髖關節的發育和成長,因此發育中的青少年或成人也會因為其他關節病變或異常而罹患DDH。
在臨床對於DDH治療的目標,是希望能穩定關節,使關節維持在正常關係。但是,由於臨床缺乏可以針對個別病患之力學特性做有效評估的工具,因此造成臨床醫師在診治DDH病患的困難。
本研究係結合步態分析系統,利用下肢簡化之剛體模型計算單腳脫位之DDH病患的髖關節力,並藉由三維有限元素法探討DDH病患骨盆之生物力學特性,建立未來有限元素法應用於DDH病患的研究方法。
由步態分析系統的關節力計算結果,針對更合理的有限元素模型之力學條件探討是有其必要性的。而在有限元素模擬部分,病患骨盆之密質骨為主要承受關節力的部位。在正常側及脫位側之密質骨,關節力皆朝恥骨和薦骨-腸股關節傳遞。並且,在脫位側之應力沿髖臼緣傳遞。而在海綿骨的部分,高應力主要分佈在腸股的背側,但是在正常及脫位側之應力分佈有明顯的不同,主要是由於脫位關節之關節力直接施於腸骨背側造成。
Abstract
The DDH is common disease in the new born infant and the adolescence as well as the adult could also be involved with the DDH. However, the basic biomechanical information is unclear and this information is important for the evaluation an treatment of this disease.
In this study, a unilateral dislocated DDH patient was employed to investigate the biomechanical response of the DDH. Both motion analysis and finite element simulation were used to perform the investigation through the comparison of the affected and normal sides. The results of motion analysis were used to obtain the joint reaction force, which was then input as the loading condition of finite element simulation. The results indicated that cortical bone was the major load carrier in both normal and affected pelvis and loading transferred from femoral head to the sacro-iliac joint as well as pubic bone. However, for the DDH side the loading was concentrated at the brim of acetabulum while the normal side was concentrated with the acetabulum joint. For the tabecular bone, the loading on pelvis, both normal and DDH side, was located the iliac wing but the DDH side had a greater stress value than the normal side. The major reason for these various stress distribution was due to the different loading conditions between the DDH and normal sides. Further investigation of the load condition through motion analysis is required to accurately represent the condition in dislocated hip join.
中文摘要 1
英文摘要 2
致謝 3
目錄 4
表目錄 6
圖目錄 6

第一章 序論 9
1.1 DDH簡介 9
1.2 關節力學之相關探討 16
1.3 髖關節異常之有限元素模擬 21
1.4 骨盆之生物力學分析 22
1.5 研究動機與目的 26

第二章 研究方法 28
2.1 研究流程 28
2.2 病患資料 29
2.3步態分析 30
2.3.1 步態分析原理 30
2.3.2實驗設備 31
2.3.3 實驗流程 32
2.3.4 光球標記法 33
2.3.5 各關節力運算方法 35
2.3.6 髖關節中心求法 36
2.3.7 步態週期 38
2.4 有限元素模型 40
2.4.1 有限元素模型構建方法 40
2.4.2 材料性質 42
2.4.3 邊界條件 43

第三章 結果 45
3.1步態分析 45
3.1.1 力板反作用力值 46
3.1.2 骨盆傾斜角 47
3.1.3 正常側之關節力 49
3.1.4 異常側之關節力 51
3.2 有限元素模擬 55
3.2.1 力學條件給定 55
3.2.2 病患正常側骨盆之生物力學模擬 56
3.2.3 病患異常側骨盆之生物力學模擬 58

第四章 結果討論 61
4.1 討論 61
4.1.1 股骨球心位置 62
4.1.2有限元素模擬 64
4.1.3髖關節力運算 66
4.2 結論 67

參考文獻 69
參考文獻
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44.林啟禎,髖關節的幾何結構分析與生物力學之研究,國立成功大學醫學工程研究所,博士論文,八十七年度
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