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題 名 | 髕股骨關節之有限元素生物力學分析=The Finite Element Analysis of the Patellofemoral Joint |
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作 者 | 張志涵; 任宛喆; 楊俊佑; 陳守義; 鄔蜀文; | 書刊名 | 中華醫學工程學刊 |
卷 期 | 19:4 1999.12[民88.12] |
頁 次 | 頁233-238 |
分類號 | 416.61 |
關鍵詞 | 髕股骨關節; 有限元素; 生物力學; Patellofemoral joint; Finite element; Biomechanics; |
語 文 | 中文(Chinese) |
中文摘要 | 髕股骨關節因為其幾何形狀的不規則、活動範圍大、影響關節運動的因素多且複雜,故在基本的髕股骨生物力學方面,尚有許多值得探討的地方。 本研究的主要目的,是以電腦斷層掃描人體髕股骨關節後,經過影像處理,以自動化、三維網格切割、及材料判斷等方法,快速而準確的建立一組接近真實髕股骨關節的幾何形狀與材料性質的三維有限元素模型,經由此模型輸入髕股骨關節彎曲運動時的邊界狀況,探討正常髕股骨關節面在彎曲運動過程中,關節面應力變化情形。同時藉改變模型的邊界條件,模擬脛骨粗壟前移法手術後,對關節面的應力及應變的影響。 本研究分析的結果發現,正常髕股骨關節面其應力分佈,以外側所產生的應力值較大,應是造成一般髕股骨關節外側摩損最主要的原因;且經過脛骨粗壟前移的手術後,可以降低關節面的應力值,減低關節面的疼痛,且發現脛骨粗壟位置前移量愈大,關節面的應力值減低愈多,但隨著前移量增加,發現其接觸位置上移,且接觸面積減小,可能使得關節在運動過程中顯得不穩定。 |
英文摘要 | The aim of this study was to establish a three-dimensional finite element mesh model to investigate the biomechanical responses of the patellofemoral joint. Based on the real geometry caught from the computer tomography, the basic kinetical and kinematical behavior of the patellofemoral joint was analyzed during flexion. The flexion loading was simulated as quasi-static displacement loading which obtained from three dimensional motion anaysls. The biomechanical influences of the anterior displacement of the tibial tuberosity surgical operation was also investigated. The results of this study showed that maximum contact stresses of patellofemoral joint occurred on the lateral side, which might be the reason for cartilage wearing. The stress of the cartilage was decreased as the anterior displacement of tibial tuberosity was increased, but the contact area of the patellofemoral joint also was reduced which might cause unstable during flexion. |
本系統中英文摘要資訊取自各篇刊載內容。