義足ソケット形状決定のための下腿モデリングシステム(機械力学,計測,自動制御)

概要

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When the relationship between the dimensions of the crural area and those of the artificial leg socket is poor, it may cause problems, such as pressure sores in the crural area. This study discusses the mechanical characteristics at artificial leg socket interfaces. A computer-aided design (CAD) model of the crural area was constructed from ultrasonic three-dimensional measurements of a crural model, and a personalized CAD model of the crural area was constructed using a free-form deformation technique. Next, a finite element (FE) model of an artificial leg socket constructed using a preliminary design was synthesized as the leg model. Then, the mechanical behavior at the interface between the crural model and artificial leg socket was investigated using finite element method (FEM) analysis. When the socket was adjusted to the leg, the Von Mises stress at the bottom of the socket decreased. This also had the effect of holding the socket stably.
2009-06-25