https://scholars.lib.ntu.edu.tw/handle/123456789/203838
標題: | 踝關節的動態實驗分析 Experimental Study of Dynamics of Ankle Joint (II) |
作者: | 林銘川 | 關鍵字: | 踝關節;界面曲率;運動軌跡;Kinematics;Ankle joint;Surface;Curvature;Congruence | 公開日期: | 31-七月-1999 | 出版社: | 臺北市:國立臺灣大學醫學院復健科 | 摘要: | 人體踝關節負擔整體重量,成對的發 展,所以與運動型態有很大的關係。本研 究利用小型三維正交雷射光座及壓力薄膜 量測各角度下關節界面接觸點位置及受力 情形。配合三軸定位掃瞄機掃瞄踝關節的 接合界面座標,用以建立曲面函數及接合界 面曲率分佈圖。可以看出踝關節的運動模 式與接合面曲率匹配有很大的關係。當關 節完全背屈時,接觸面積偏向前緣及外側, 在蹠屈過程中接觸面積也會傾向外側。研究 結果也顯示,踝關節在完全背屈或蹠屈時, 雖然接觸面積會減小,但是該接觸面下的界 面匹配度也相對增加。 Due to the weight bearing nature, human ankle joint complex plays an important role in the mechanics of locomotion. In present study, pressure sensitive films were used to define the contact location and area at various inclinations. Then, we measure the articular surfaces with a 3D optical scanning system. Data were fitted with a bivariate parametric function and the surface curvature maps were constructed. Kinematics of ankle joint showed strong correlation with the joint surface curvature maps. As the ankle dorsiflexed, the contact areas of the joint shifted laterally which highlight the importance of lateral malleolus in ankle stability. The ankle joint contact area decreases slightly with the angle of inclination, however, the congruency increases to compensate the loss. This might be one of the reasons why spontaneous ostesaithitis is not common at the ankle joint. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/28954 | 其他識別: | 882314B002315 | Rights: | 國立臺灣大學醫學院復健科 |
顯示於: | 醫學系 |
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882314B002315.pdf | 729.34 kB | Adobe PDF | 檢視/開啟 |
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