膝関節曲面の形状解析法(1部ヒトのバイオメカニクス)

概要

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The curved surfaces of knee joint condyles are rather complicated in shape, and these complicated shapes may have important roles in movement and load bearing in the knee. Thus, first of all, it is necessary to express the articular surface shapes in mathematical formulations in order to elucidate the joint movement mechanisms. Their mathematical expression, however, becomes complicated because these surfaces are made of rule-less free-formed shapes. However none of the pertinent research works has been performed in spite of the above-mentioned necessity. Therefore, we deduced an equation of curved surfaces to express the entire articular surface mathematically through the application of computeraided designing theory, which has been in use in automobile and other industries. In the measurement of the articular surfaces, we applied reconstructed silicon plastic models. After that, using the above-mentioned mathematical equation and the actual data, we computed differential geometrical variables and abstracted articular feature patterns. Further, we introduced the indexes of load-bearing capacity for the articular surfaces of contact, considering various knee flection angles.
バイオメカニズム学会の論文
1984-04-25