Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17174
Title: A work study of the CAD/CAM method and conventional manual method in the fabrication of spinal orthoses for patients with adolescent idiopathic scoliosis
Authors: Wong, MS 
Cheng, JCY
Wong, MW
So, SF
Issue Date: 2005
Publisher: SAGE Publications
Source: Prosthetics and orthotics international, 2005, v. 29, no. 1, p. 93-104 How to cite?
Journal: Prosthetics and orthotics international 
Abstract: A study was conducted to compare the CAD/CAM method with the conventional manual method in fabrication of spinal orthoses for patients with adolescent idiopathic scoliosis. Ten subjects were recruited for this study. Efficiency analyses of the two methods were performed from cast filling/digitization process to completion of cast/image rectification. The dimensional changes of the casts/models rectified by the two cast rectification methods were also investigated. The results demonstrated that the CAD/CAM method was faster than the conventional manual method in the studied processes. The mean rectification time of the CAD/CAM method was shorter than that of the conventional manual method by 108.3 min (63.5%). This indicated that the CAD/CAM method took about 1/3 of the time of the conventional manual to finish cast rectification. In the comparison of cast/image dimensional differences between the conventional manual method and the CAD/CAM method, five major dimensions in each of the five rectified regions namely the axilla, thoracic, lumbar, abdominal and pelvic regions were involved. There were no significant dimensional differences (p < 0.05) in 19 out of the 25 studied dimensions. This study demonstrated that the CAD/CAM system could save the time in the rectification process and offer a relatively high resemblance in cast rectification as compared with the conventional manual method.
URI: http://hdl.handle.net/10397/17174
ISSN: 0309-3646
EISSN: 1746-1553
DOI: 10.1080/17461550500066782
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