Lemaire E D, Bexiga P, Johnson F, Solomonidis S E, Paul J P
The Rehabilitation Centre, Ottawa, Ontario, Canada.
Prosthet Orthot Int. 1999 Apr;23(1):30-44. doi: 10.3109/03093649909071608.
A quantitative method was developed for defining manual socket modifications, averaging these modifications over a series of amputees, and using the average modifications as a template in commercial CAD/CAM systems. The CADVIEW programme (i.e. software for viewing and analysing CAD sockets) was rewritten to provide comparison functions for aligning sockets to a common axis, visualising the differences between sockets, generating modification outlines, assigning apex point values, and averaging the modification outlines. A CAD template generated in this manner should be the best general representation of a prosthetist's modification style. To test this hypothesis, 13 people with trans-tibial amputations were fitted with both a manual and a CAD/CAM socket. Questionnaires were completed by the subjects and by the prosthetist to obtain information on prosthetic comfort, function, and overall satisfaction. Ground reaction force and stride parameter data were also collected for each prosthesis during gait laboratory testing. No significant differences were found between the manually designed socket and the CAD/CAM designed socket for all data except the vertical peak forces on the amputated side. These results support the clinical application of this quantitative technique for making the transition from manual to CAD/CAM prosthetic modification procedures.
开发了一种定量方法，用于定义手动接受腔修改，对一系列截肢者的这些修改进行平均，并将平均修改作为商业CAD/CAM系统中的模板。对CADVIEW程序（即用于查看和分析CAD接受腔的软件）进行了重写，以提供用于将接受腔与公共轴对齐、可视化接受腔之间的差异、生成修改轮廓、分配顶点值以及平均修改轮廓的比较功能。以这种方式生成的CAD模板应该是假肢师修改风格的最佳通用表示。为了验证这一假设，为13名经胫截肢者分别安装了手动接受腔和CAD/CAM接受腔。受试者和假肢师完成了问卷调查，以获取有关假肢舒适度、功能和总体满意度的信息。在步态实验室测试期间，还为每个假肢收集了地面反作用力和步幅参数数据。除了截肢侧的垂直峰值力外，在所有数据方面，手动设计的接受腔和CAD/CAM设计的接受腔之间未发现显著差异。这些结果支持了这种定量技术在临床上的应用，以便从手动假肢修改程序过渡到CAD/CAM假肢修改程序。
