Automated fit quantification of tibial nail designs during the insertion using computer three-dimensional modelling
Article
Article Title | Automated fit quantification of tibial nail designs during the insertion using computer three-dimensional modelling |
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ERA Journal ID | 5059 |
Article Category | Article |
Authors | Amarathunga, Jayani P, Schuetz, Michael A., Yarlagadda, Prasad KVD and Schmutz, Beat |
Journal Title | Proceedings of the Institution of Mechanical Engineers Part H: Journal of Engineering in Medicine |
Journal Citation | 228 (12), pp. 1227-1234 |
Number of Pages | 8 |
Year | Dec 2014 |
Place of Publication | United Kingdom |
ISSN | 0954-4119 |
Digital Object Identifier (DOI) | https://doi.org/10.1177/0954411914561246 |
Web Address (URL) | https://journals.sagepub.com/doi/10.1177/0954411914561246 |
Abstract | Intramedullary nailing is the standard fixation method for displaced diaphyseal fractures of the tibia. An optimal nail design should both facilitate insertion and anatomically fit the bone geometry at its final position in order to reduce the risk of stress fractures and malalignments. Due to the nonexistence of suitable commercial software, we developed a software tool for the automated fit assessment of nail designs. Furthermore, we demonstrated that an optimised nail, which fits better at the final position, is also easier to insert. Three-dimensional models of two nail designs and 20 tibiae were used. The fitting was quantified in terms of surface area, maximum distance, sum of surface areas and sum of maximum distances by which the nail was protruding into the cortex. The software was programmed to insert the nail into the bone model and to quantify the fit at defined increment levels. On average, the misfit during the insertion in terms of the four fitting parameters was smaller for the Expert Tibial Nail Proximal bend (476.3 mm2, 1.5 mm, 2029.8 mm2, 6.5 mm) than the Expert Tibial Nail (736.7 mm2, 2.2 mm, 2491.4 mm2, 8.0 mm). The differences were statistically significant (p ≤ 0.05). The software could be used by nail implant manufacturers for the purpose of implant design validation. |
Keywords | Three-dimensional modelling; automation; tibia; intramedullary nail; nail fit; fracture fixation |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Title | Automated fit quantification of tibial nail designs during the insertion using computer three-dimensional modelling |
Byline Affiliations | Queensland University of Technology |
Princess Alexandra Hospital, Australia | |
School of Engineering |
https://research.usq.edu.au/item/w43q8/automated-fit-quantification-of-tibial-nail-designs-during-the-insertion-using-computer-three-dimensional-modelling
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