A three-dimensional, anatomically detailed foot model: a foundation for a finite element simulation and means of quantifying foot-bone position.
A three-dimensional, anatomically detailed foot model: a foundation for a finite element simulation and means of quantifying foot-bone position.
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发表时间：
2002-05
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通讯作者：
D. Camacho;W. Ledoux;E. Rohr;B. Sangeorzan;R. Ching
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作者：
D. Camacho;W. Ledoux;E. Rohr;B. Sangeorzan;R. Ching
我们从286张计算机化的地形(CT)图像中生成了一个人体足部的详细解剖、三维(3D)重建。对于每个骨骼，获取二维横断面数据并对齐以形成堆积图像模型。我们从堆叠的图像模型中计算出每个骨骼的惯性矩阵，并用它来确定主轴。用骨骼主轴之间的相对角度来描述足部的形状，即足部骨骼之间的关系。从堆叠的图像模型生成3D表面模型，并为每个骨骼创建详细的3D网格。另外，足底软组织的典型几何形状由CT扫描获得，而骨间软骨的几何形状由三维表面骨模型获得。这个模型有两个用途：它为未来的人类足部有限元模型奠定了解剖学基础，我们使用它来利用足部骨骼主轴之间的关系来客观地量化足部形状。
We generated an anatomically detailed, three-dimensional (3-D) reconstruction of a human foot from 286 computerized topographic (CT) images. For each bone, 2-D cross-sectional data were obtained and aligned to form a stacked image model. We calculated the inertial matrix of each bone from the stacked image model and used it to determine the principal axes. Relative angles between the principal axes of the bones were employed to describe the shape of the foot, i.e., the relationships between the bones of the foot. A 3-D surface model was generated from the stacked image models and a detailed 3-D mesh for each bone was created. Additionally, the representative geometry of the plantar soft tissue was obtained from the CT scans, while the geometries of the cartilage between bones were obtained from the 3-D surface bone models. This model served dual purposes: it formed the anatomical foundation for a future finite element model of the human foot and we used it to objectively quantify foot shape using the relationships between the principal axes of the foot bones.