X線単面投影像による人工膝関節の動態推定 : 大腿・けい骨コンポーネントの相対運動推定ならびに関節接触モデルの併用(機械力学,計測,自動制御)

概要

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We have developed a technique of pattern matching algorithm for estimating pose/position of each tibial and femoral component respectively from its 2 D perspective projection. Yet our pattern matching method should be objected to assess knee prosthetic kinematics and to introduce the contact points' trajectories between the articulating surfaces in order to check and predict the friction and wear conditions on the articulating surfaces. To this respect, the following two kinds of simulation studies were carried out ; One was to estimate relative pose/position between the femoral and the tibial components, and the other was to incorporate the 3 D mathematical model of prosthetic articulation into our pattern matching algorithm. The simulation results demonstrated that the estimation accuracy for a relative motion was equivalent to those for a single component, and the 3 D model could not only introduce the contact points' trajectories between articulating surfaces but also improve the estimation accuracies especially for the z-translation.
社団法人日本機械学会の論文
2005-02-25