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Proceedings Paper

Assessment Of Three-Dimensional Scoliotic Deformity By Rasterstereography
Author(s): E. Hierholzer; B. Drerup
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Paper Abstract

Analysis of three-dimensional back shape enables the calculation of the so-called symmetry line, which is closely related to the line of the spinous processes on the back surface. A comparative photogrammetric measurement proved a mean deviation in the order of the palpation error. Furthermore, the angle of the surface normal on the symmetry line proved to be equal to the angle of vertebral rotation within the limits of radiographic accuracy. These findings enable a three-dimensional reconstruction of the spinal midline. Scoliotic deformity may thus be determined solely from surface data. In frontal projection the mean error of the reconstructed midline is about 4 mm as compared to standard radiographs.

Paper Details

Date Published: 14 April 1989
PDF: 7 pages
Proc. SPIE 1030, Biostereometrics '88, (14 April 1989); doi: 10.1117/12.950448
Show Author Affiliations
E. Hierholzer, Institut fur Experimentelle Biomechanik der Universitat Munster (Germany)
B. Drerup, Institut fur Experimentelle Biomechanik der Universitat Munster (Germany)


Published in SPIE Proceedings Vol. 1030:
Biostereometrics '88
Juerg U. Baumann; Robin E. Herron, Editor(s)

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