Evaluation of the effect of shape on a contemporary CAD system
Evaluation of the effect of shape on a contemporary CAD system
复制标题
DOI：
10.1080/03093640802015920
复制
发表时间：
2008-01-01
影响因子：
1.5
通讯作者：
McKay, G.
中科院分区：
文献类型：
--
作者：
McGarry, T.;McHugh, B.;McKay, G.
TracerCAD系统是世界上领先的假肢CAD系统之一，越来越多地用于临床，以取代传统的残肢形状捕获方法。在假肢接受腔的生产过程中，可以说对残体的精确尺寸捕获是最重要的过程。TracerCAD系统准确度之前已在圆柱形模型上进行过测试，但未在经胫骨形状上进行过测试。残肢的形状不规则，因此使用TracerCAD时，评估形状是否对收集的数据准确性有影响非常重要。本研究的目的是研究TracerCAD系统在测量已知尺寸和体积的经胫骨残端模型时的准确性。制作经胫骨残端的模型，并填充石膏，并使用数据采集系统进行测量，精度为5微米（0.005 mm）。由个人用户使用TracerCAD系统重复跟踪模型。计算动态指示器测量的平均值，并与TracerCAD测量的单个值和平均值进行比较。结果表明，TracerCAD测量在更复杂的经胫骨模型上的一致性不如圆柱形模型。
The TracerCAD system is one of the leading prosthetic CAD systems in the world and is increasingly used in clinics to replace traditional methods of residual limb shape capture. Accurate dimensional capture of the residuum is arguably the most important process in the production of a prosthetic socket. TracerCAD system accuracy has previously been tested on a cylindrical model but not a trans-tibial shape. Residual limbs are irregular in shape therefore it is important to assess if shape has an effect on the accuracy of data collected when using TracerCAD. The objective of this study is to investigate the accuracy of the TracerCAD system in measuring a model of a trans-tibial stump of known dimensions and volume. A model of a trans-tibial stump was produced and filled with plaster and measured using a data acquisition system with an accuracy of five micron (0.005mm). The model was repeatedly traced using the TracerCAD system by an individual user. The mean value of measures taken by the dynamic indicator was calculated and compared to individual and mean values of TracerCAD measurement. Results showed that the TracerCAD measurement was not as consistent on the more complex trans-tibial model as for the cylindrical model.