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Recovery of distal hole axis in intramedullary nail trajectory planning

Zhu, Y.; Phillips, R.; Griffiths, J. G.; Viant, W.; Mohsen, A.; Bielby, M.

Authors

Y. Zhu

R. Phillips

J. G. Griffiths

A. Mohsen

M. Bielby



Abstract

In intramedullary nail (IMN) surgical operations, one of the main efforts for surgeons is to find the axes of two distal holes. Two distal holes on an IMN, which are inside the intramedullary canal of a patient's femur, can only be seen in a lateral X-ray view. For the standard surgical procedure, the localization of the distal hole axes is a trial-and-error process which results in a long surgical time and large dose of X-ray exposure. In this paper, an algorithm to derive the three-dimensional position and orientation of the distal hole axis was developed. The algorithm first derives the nail axis through two X-ray images. Then the distal hole axis is calculated through projecting back the hole boundary on the X-ray image from a lateral view to three-dimensional space. A least-squares method is used to determine the centres of the front hole and the back hole through iteration. The algorithm has been tested with real data and it was robust.

Journal Article Type Conference Paper
Publication Date Oct 9, 2002
Journal PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF EN
Print ISSN 0954-4119
Electronic ISSN 2041-3033
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 216
Issue 5
Pages 323-332
APA6 Citation Zhu, Y., Phillips, R., Griffiths, J. G., Viant, W., Mohsen, A., & Bielby, M. (2002). Recovery of distal hole axis in intramedullary nail trajectory planning. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 216(5), 323-332. doi:10.1243/09544110260216595
DOI https://doi.org/10.1243/09544110260216595
Keywords Mechanical Engineering; General Medicine
Publisher URL http://journals.sagepub.com/doi/10.1243/09544110260216595
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