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| Author(s): |
Maria Eduarda Bastos Andrade Moutinho Conceição
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Jaboticabal. 2021-09-14. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal |
| Defense date: | 2020-09-24 |
| Advisor: | Luis Gustavo Gosuen Gonçalves Dias |
| Abstract | |
The aim of this study was to describe and evaluate the feasibility of novel angle stable interlocking nail (AS-ILN) system, developed by our team. As well as all the material used to place it in the bone. Further, we compared biomechanically torsion, flexion and flexion-compression, this model to another kind of interlocking nail as well plate-rod with locking plate system. Twelve models of this novel interlocking nail were place in cadaveric femurs to assess the technical feasibility. Among the changes on this novel system, a threaded drill bit guide, which couple on the threaded nail, moreover, these threads promote an angle stable locking between the bolt and the nail. For the mechanical tests, sixty ex vivo femurs of 30 dogs weighting above than 20kg were used. All of the femurs had a 20 mm gap on medial diaphysis. The mechanical tests were parried (contralateral femurs of each dog) comparing novel nail (Hn) x Popak ail (Hp) or Hn x plate-rod (PR), using five models to each kind of test in each group. This novel AS-ILN system was feasible and easily placed, some of the complications seen in two cases was the failure in locking the bolt to the nail. Regarding to mechanical tests until failure, Hn was stiffer than PR in all of the forces tested, although it was similar to Hp in major part of them, having a hogher value in the maximum force on flexion test and stiffer on torsional force. We conclude that the proposed system is indicated to treat long bone fractures, because the system is feasible and had a low complication data, further, it is stiffer than other kind of internal fixation systems. (AU) | |
| FAPESP's process: | 17/03027-8 - Development of newly interlocking nail. gear and implatation technique detailing and biomechanical tests in canine femur |
| Grantee: | Maria Eduarda Bastos Andrade Moutinho da Conceição |
| Support Opportunities: | Scholarships in Brazil - Doctorate |