Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate

Anatomically precontoured plates are commonly used to treat periarticular fractures. A well-fitting plate can be used as a tool for anatomical reduction of the fractured bone. Recent studies highlighted that some plates fit poorly for many patients due to considerable shape variations between bones...

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Main Authors: Harith, Hazreen Haizi, Schmutz, Beat, Malekani, Javad, Schuetz, Michael A., Yarlagadda, Prasad K.
Format: Article
Language:English
Published: Medical Engineering & Physics 2016
Online Access:http://psasir.upm.edu.my/id/eprint/55231/
http://psasir.upm.edu.my/id/eprint/55231/1/Can%20we%20safely%20deform%20a%20plate%20to%20fit%20every%20bone%20population-based%20fit%20assessment%20and%20finite%20element%20deformation%20of%20a%20distal%20tibial%20plate.pdf
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author Harith, Hazreen Haizi
Schmutz, Beat
Malekani, Javad
Schuetz, Michael A.
Yarlagadda, Prasad K.
author_facet Harith, Hazreen Haizi
Schmutz, Beat
Malekani, Javad
Schuetz, Michael A.
Yarlagadda, Prasad K.
author_sort Harith, Hazreen Haizi
building UPM Institutional Repository
collection Online Access
description Anatomically precontoured plates are commonly used to treat periarticular fractures. A well-fitting plate can be used as a tool for anatomical reduction of the fractured bone. Recent studies highlighted that some plates fit poorly for many patients due to considerable shape variations between bones of the same anatomical site. While it is impossible to design one shape that fits all, it is also burdensome for the manufacturers and hospitals to produce, store and manage multiple plate shapes without the certainty of utilization by a patient population. In this study, we investigated the number of shapes required for maximum fit within a given dataset, and if they could be obtained by manually deforming the original plate. A distal medial tibial plate was automatically positioned on 45 individual tibiae, and the optimal deformation was determined iteratively using finite element analysis simulation. Within the studied dataset, we found that: (i) 89% fit could be achieved with four shapes, (ii) 100% fit was impossible through mechanical deformation, and (iii) the deformations required to obtain the four plate shapes were safe for the stainless steel plate for further clinical use. The proposed framework is easily transferable to other orthopaedic plates.
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spelling upm-552312018-01-23T04:17:45Z http://psasir.upm.edu.my/id/eprint/55231/ Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate Harith, Hazreen Haizi Schmutz, Beat Malekani, Javad Schuetz, Michael A. Yarlagadda, Prasad K. Anatomically precontoured plates are commonly used to treat periarticular fractures. A well-fitting plate can be used as a tool for anatomical reduction of the fractured bone. Recent studies highlighted that some plates fit poorly for many patients due to considerable shape variations between bones of the same anatomical site. While it is impossible to design one shape that fits all, it is also burdensome for the manufacturers and hospitals to produce, store and manage multiple plate shapes without the certainty of utilization by a patient population. In this study, we investigated the number of shapes required for maximum fit within a given dataset, and if they could be obtained by manually deforming the original plate. A distal medial tibial plate was automatically positioned on 45 individual tibiae, and the optimal deformation was determined iteratively using finite element analysis simulation. Within the studied dataset, we found that: (i) 89% fit could be achieved with four shapes, (ii) 100% fit was impossible through mechanical deformation, and (iii) the deformations required to obtain the four plate shapes were safe for the stainless steel plate for further clinical use. The proposed framework is easily transferable to other orthopaedic plates. Medical Engineering & Physics 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/55231/1/Can%20we%20safely%20deform%20a%20plate%20to%20fit%20every%20bone%20population-based%20fit%20assessment%20and%20finite%20element%20deformation%20of%20a%20distal%20tibial%20plate.pdf Harith, Hazreen Haizi and Schmutz, Beat and Malekani, Javad and Schuetz, Michael A. and Yarlagadda, Prasad K. (2016) Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate. Medical Engineering and Physics, 38 (3). pp. 280-285. ISSN 1350-4533; ESSN: 1873-4030 http://www.medengphys.com/ 10.1016/j.medengphy.2015.11.012
spellingShingle Harith, Hazreen Haizi
Schmutz, Beat
Malekani, Javad
Schuetz, Michael A.
Yarlagadda, Prasad K.
Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title_full Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title_fullStr Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title_full_unstemmed Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title_short Can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
title_sort can we safely deform a plate to fit every bone? population-based fit assessment and finite element deformation of a distal tibial plate
url http://psasir.upm.edu.my/id/eprint/55231/
http://psasir.upm.edu.my/id/eprint/55231/
http://psasir.upm.edu.my/id/eprint/55231/
http://psasir.upm.edu.my/id/eprint/55231/1/Can%20we%20safely%20deform%20a%20plate%20to%20fit%20every%20bone%20population-based%20fit%20assessment%20and%20finite%20element%20deformation%20of%20a%20distal%20tibial%20plate.pdf