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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/48350
標題: | 利用三維動態X光比較研究日常活動時全人工膝關節之生物力學表現 A Comparative Study of the Biomechanics of Total Knee Replacements during Functional Activities Using Three-dimensional Fluoroscopy |
作者: | Mei-Ying Kuo 郭美英 |
指導教授: | 呂東武(Tung-Wu Lu) |
關鍵字: | 動態X-光系統,全人工膝關節,關節表面運動學,皮膚移動誤差, fluoroscopy system,total knee replacement,joint surface kinematics,soft tissue artifacts, |
出版年 : | 2011 |
學位: | 博士 |
摘要: | 利用動態X-光系統,發展一個以實體模型為基礎,並配合邊界輪廓比對嵌合方法,可以精確的將全人工膝關節元件由二維影像重建回三維影像。藉由此方法,對固定式墊片後十字韌帶保留、活動式墊片後十字韌帶保留和固定式墊片後十字韌帶切除之全人工膝關節設計在日常生活活動進行比較。結果發現,三種不同人工膝關節設計在不同的日常生活活動,其關節角度、股脛接觸點位置和關節表面轉滑比值各有不同的變化。對於了解三種不同人工膝關節在日常活動肢運動學有更進一步的了解。在力動學上的分析,由於使用立體攝影術,使用貼定在皮膚上的反光標記會有皮膚移動所造成的誤差,這些誤差會直接影響後續相關力動學相關資料,膝關節中心位置和膝力矩的影響甚鉅。未來將對更多不同型態人工關節之運動學和力動學進行分析。 A volumetric model-based 2D-to-3D and combined with weight edge-matching score method was developed which is able to measure accurate replaced total knee three-dimensional kinematics by using fluoroscopy system. Through this measurement method, kinematics and joint surface kinematics are comparative for three total knee replacement designs; fixed-bearing posterior cruciate retaining design, mobile-bearing posterior cruciate retaining design and fixed-bearing posterior cruciate sacrificed design during activities. The results showed that different knee kinematic behavior, such as knee joint angles, locations of the contact points and slip ratios for three different total knee replacement designs during activities. For kinetic analysis, the soft tissue artifacts would be produced by using motion analysis system. The effects of soft tissue artifacts on the calculated joint center translations, joint angle and moments were qualified. The results may help in kinematics and kinetics analysis for more different total knee replacement designs. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/48350 |
全文授權: | 有償授權 |
顯示於系所單位: | 醫學工程學研究所 |
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